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There are 99 counties in the U.S. state of Iowa. The first two counties, Des Moines County and Dubuque County, were created in 1834 when Iowa was still part of the Michigan Territory. In preparation for Michigan's statehood, part of Michigan Territory was formed into Wisconsin Territory in 1836[1]. Two years later, the western portion was split off to become Iowa Territory.[2] The south-eastern part of Iowa Territory became Iowa, the 29th state in the union, on 28 December 1846[3], by which point 44 counties had been created. Counties continued to be created by the state government until 1857, when the last county, Humboldt County, was created.[4] One of the most significant days in Iowa county history was January 15, 1851, on which 49 counties were created.[5]

Map of counties numbered as in the National Atlas of the United States

The Iowa Constitution of 1857, which is still in effect today, states that counties must have an area of at least 432 square miles (1,120 km2), nor can any county be reduced below that size by boundary changes.[6] However, exceptions to this rule were granted, as ten counties have areas below this size. (The table below shows land area, but the Constitution deals with total area.[6]) The smallest county (Dickinson) has a land area of 381 sq mi (987 km²), while the largest (Kossuth) has an area 973sq mi (2,520 km²). Polk county is the most densely populated county at 657 persons/sq mi,[7] and contains the state's capital and largest city, Des Moines.


[edit] County information

The number in the column headed "#" is the one used on the map from the National Atlas of the United States, shown on the left. The Federal Information Processing Standard (FIPS) code, which is used by the United States government to uniquely identify counties, is provided with each entry. The FIPS code for each county links to census data for that county.

County
 FIPS Code
[8]		 County seat
[4]		 #
 Established
[4][9]		 Formed from
[10]		 Etymology
[9]		 Population
[4]		 Area
[4]		 Map
Adair County 001 Greenfield 69 01851-01-15 January 15, 1851 Cass County John Adair (1757–1840), sixth governor of Kentucky &0000000000008243.0000008,243 &0000000000000569.000000569 sq mi
(&0000000000001474.0000001,474 km2)		 State map highlighting Adair County
Adams County 003 Corning 81 01851-01-15 January 15, 1851 Taylor County John Adams, second President of the United States (1797–1801) &0000000000004482.0000004,482 &0000000000000424.000000424 sq mi
(&0000000000001098.0000001,098 km2)		 State map highlighting Adams County
Allamakee County 005 Waukon 11 01847-02-20 February 20, 1847 Clayton County Allen Magee (a.k.a. Allan Makee), an early Indian trader &0000000000014675.00000014,675 &0000000000000640.000000640 sq mi
(&0000000000001658.0000001,658 km2)		 State map highlighting Allamakee County
Appanoose County 007 Centerville 96 01843-02-17 February 17, 1843 Davis County Appanoose, Native American chief who headed peace party in the Black Hawk War &0000000000013721.00000013,721 &0000000000000496.000000496 sq mi
(&0000000000001285.0000001,285 km2)		 State map highlighting Appanoose County
Audubon County 009 Audubon 57 01851-01-15 January 15, 1851 Black Hawk County and Cass County John James Audubon (1785–1851), ornithologist and artist &0000000000006830.0000006,830 &0000000000000443.000000443 sq mi
(&0000000000001147.0000001,147 km2)		 State map highlighting Audubon County
Benton County 011 Vinton 51 01837-12-21 December 21, 1837 Native American lands and Wisconsin Territory Thomas Hart Benton, United States Senator (1821–1851) &0000000000025308.00000025,308 &0000000000000716.000000716 sq mi
(&0000000000001854.0000001,854 km2)		 State map highlighting Benton County
Black Hawk County 013 Waterloo 39 01843-02-17 February 17, 1843 Delaware County Black Hawk (1767–1838), chief of Fox and Sac Indians and leader in the Black Hawk War &0000000000128012.000000128,012 &0000000000000567.000000567 sq mi
(&0000000000001469.0000001,469 km2)		 State map highlighting Black Hawk County
Boone County 015 Boone 47 01846-01-13 January 13, 1846 Polk County Nathan Boone (1781–1863), one of the first to survey Iowa &0000000000026224.00000026,224 &0000000000000572.000000572 sq mi
(&0000000000001481.0000001,481 km2)		 State map highlighting Boone County
Bremer County 017 Waverly 30 01851-01-15 January 15, 1851 Native American lands and Winnebago County Fredrika Bremer (1801–1865), Swedish poet and author &0000000000023325.00000023,325 &0000000000000428.000000428 sq mi
(&0000000000001109.0000001,109 km2)		 State map highlighting Bremer County
Buchanan County 019 Independence 40 01837-12-21 December 21, 1837 Delaware County and Wisconsin Territory James Buchanan, fifteenth President of the United States (1857–1861) &0000000000021093.00000021,093 &0000000000000571.000000571 sq mi
(&0000000000001479.0000001,479 km2)		 State map highlighting Buchanan County
Buena Vista County 021 Storm Lake 24 01851-01-15 January 15, 1851 Clay County and Sac County Battle of Buena Vista, a battle during the Mexican-American War &0000000000020411.00000020,411 &0000000000000575.000000575 sq mi
(&0000000000001489.0000001,489 km2)		 State map highlighting Buena Vista County
Butler County 023 Allison 29 01851-01-15 January 15, 1851 Black Hawk County and Buchanan County William Orlando Butler (1791–1880), unsuccessful Democratic candidate for Vice President &0000000000015305.00000015,305 &0000000000000580.000000580 sq mi
(&0000000000001502.0000001,502 km2)		 State map highlighting Butler County
Calhoun County 025 Rockwell City 34 01851-01-15 January 15, 1851 Fox County (renamed) John Caldwell Calhoun, Vice President of the United States (1825–1832) &0000000000011115.00000011,115 &0000000000000570.000000570 sq mi
(&0000000000001476.0000001,476 km2)		 State map highlighting Calhoun County
Carroll County 027 Carroll 45 01851-01-15 January 15, 1851 Guthrie County Charles Carroll (1737–1832), longest lived signatory of the Declaration of Independence &0000000000021421.00000021,421 &0000000000000569.000000569 sq mi
(&0000000000001474.0000001,474 km2)		 State map highlighting Carroll County
Cass County 029 Atlantic 68 01851-01-15 January 15, 1851 Pottawattamie County Lewis Cass, United States Senator from Michigan and unsuccessful candidate for President (1848) &0000000000014684.00000014,684 &0000000000000564.000000564 sq mi
(&0000000000001461.0000001,461 km2)		 State map highlighting Cass County
Cedar County 031 Tipton 65 01837-12-21 December 21, 1837 Wisconsin Territory Red Cedar River, river which runs through county &0000000000018187.00000018,187 &0000000000000580.000000580 sq mi
(&0000000000001502.0000001,502 km2)		 State map highlighting Cedar County
Cerro Gordo County 033 Mason City 17 01851-01-15 January 15, 1851 Floyd County Battle of Cerro Gordo, battle during the Mexican-American War &0000000000046447.00000046,447 &0000000000000568.000000568 sq mi
(&0000000000001471.0000001,471 km2)		 State map highlighting Cerro Gordo County
Cherokee County 035 Cherokee 23 01851-01-15 January 15, 1851 Crawford County Cherokee Native American tribe &0000000000013035.00000013,035 &0000000000000577.000000577 sq mi
(&0000000000001494.0000001,494 km2)		 State map highlighting Cherokee County
Chickasaw County 037 New Hampton 19 01851-01-15 January 15, 1851 Fayette County Chickasaw Native American tribe &0000000000013095.00000013,095 &0000000000000505.000000505 sq mi
(&0000000000001308.0000001,308 km2)		 State map highlighting Chickasaw County
Clarke County 039 Osceola 83 01846-01-13 January 13, 1846 Lucas County James Clarke, third Governor of Iowa Territory (1845–1846) &0000000000009133.0000009,133 &0000000000000431.000000431 sq mi
(&0000000000001116.0000001,116 km2)		 State map highlighting Clarke County
Clay County 041 Spencer 14 01851-01-15 January 15, 1851 Native American lands Henry Clay, Jr. (1807–1847), officer in the Mexican-American War &0000000000017372.00000017,372 &0000000000000569.000000569 sq mi
(&0000000000001474.0000001,474 km2)		 State map highlighting Clay County
Clayton County 043 Elkader 21 01837-12-21 December 21, 1837 Dubuque County and Wisconsin Territory John M. Clayton (1796–1856), United States Senator from Delaware &0000000000018678.00000018,678 &0000000000000779.000000779 sq mi
(&0000000000002018.0000002,018 km2)		 State map highlighting Clayton County
Clinton County 045 Clinton 66 01837-12-21 December 21, 1837 Dubuque County and Wisconsin Territory DeWitt Clinton (1769–1828), Governor of New York &0000000000050149.00000050,149 &0000000000000695.000000695 sq mi
(&0000000000001800.0000001,800 km2)		 State map highlighting Clinton County
Crawford County 047 Denison 44 01851-01-15 January 15, 1851 Shelby County William Harris Crawford (1772–1834), United States Senator from Georgia &0000000000016942.00000016,942 &0000000000000714.000000714 sq mi
(&0000000000001849.0000001,849 km2)		 State map highlighting Crawford County
Dallas County 049 Adel 59 01846-01-13 January 13, 1846 Polk County George Mifflin Dallas (1792–1864), eleventh Vice President of the United States &0000000000040750.00000040,750 &0000000000000586.000000586 sq mi
(&0000000000001518.0000001,518 km2)		 State map highlighting Dallas County
Davis County 051 Bloomfield 97 01843-02-17 February 17, 1843 Van Buren County Garrett Davis (1801–1872), congressman &0000000000008541.0000008,541 &0000000000000503.000000503 sq mi
(&0000000000001303.0000001,303 km2)		 State map highlighting Davis County
Decatur County 053 Leon 94 01846-01-13 January 13, 1846 Appanoose County Stephen Decatur (1779–1820), naval officer in the War of 1812 &0000000000008689.0000008,689 &0000000000000532.000000532 sq mi
(&0000000000001378.0000001,378 km2)		 State map highlighting Decatur County
Delaware County 055 Manchester 41 01837-12-21 December 21, 1837 Dubuque County and Wisconsin Territory Delaware, United States state, or Delaware County, New York &0000000000018404.00000018,404 &0000000000000578.000000578 sq mi
(&0000000000001497.0000001,497 km2)		 State map highlighting Delaware County
Des Moines County 057 Burlington 89 01834-09-06 September 6, 1834 Michigan Territory and Wisconsin Territory Des Moines River, river that once ran through the county &0000000000042351.00000042,351 &0000000000000416.000000416 sq mi
(&0000000000001077.0000001,077 km2)		 State map highlighting Des Moines County
Dickinson County 059 Spirit Lake 3 01851-01-15 January 15, 1851 Kossuth County Daniel Stevens Dickinson (1800–1866), United States Senator from New York &0000000000016424.00000016,424 &0000000000000381.000000381 sq mi
(&0000000000000987.000000987 km2)		 State map highlighting Dickinson County
Dubuque County 061 Dubuque 42 01834-09-06 September 6, 1834 Michigan Territory and Wisconsin Territory Julien Dubuque (1762–1810), first permanent white settler in Iowa &0000000000089143.00000089,143 &0000000000000608.000000608 sq mi
(&0000000000001575.0000001,575 km2)		 State map highlighting Dubuque County
Emmet County 063 Estherville 4 01851-01-15 January 15, 1851 Dickinson County and Kossuth County Robert Emmet (1778–1803), Irish revolutionary &0000000000011027.00000011,027 &0000000000000396.000000396 sq mi
(&0000000000001026.0000001,026 km2)		 State map highlighting Emmet County
Fayette County 065 West Union 20 01837-12-21 December 21, 1837 Clayton County and Wisconsin Territory Marquis de Lafayette (1757–1834), Frenchman who helped the American Colonies in the Revolutionary War &0000000000022008.00000022,008 &0000000000000731.000000731 sq mi
(&0000000000001893.0000001,893 km2)		 State map highlighting Fayette County
Floyd County 067 Charles City 18 01851-01-15 January 15, 1851 Chickasaw County Charles Floyd (1782–1804), member of the Lewis and Clark Expedition who died in Iowa &0000000000016900.00000016,900 &0000000000000501.000000501 sq mi
(&0000000000001298.0000001,298 km2)		 State map highlighting Floyd County
Franklin County 069 Hampton 28 01851-01-15 January 15, 1851 Chickasaw County Benjamin Franklin (1706–1790), statesman &0000000000010704.00000010,704 &0000000000000582.000000582 sq mi
(&0000000000001507.0000001,507 km2)		 State map highlighting Franklin County
Fremont County 071 Sidney 90 01847-02-24 February 24, 1847 Pottawattamie County John Charles Fremont (1813–1890), officer in Mexican-American War &0000000000008010.0000008,010 &0000000000000511.000000511 sq mi
(&0000000000001323.0000001,323 km2)		 State map highlighting Fremont County
Greene County 073 Jefferson 46 01851-01-15 January 15, 1851 Dallas County Nathanael Greene (1742–1786), Revolutionary War general &0000000000010366.00000010,366 &0000000000000568.000000568 sq mi
(&0000000000001471.0000001,471 km2)		 State map highlighting Greene County
Grundy County 075 Grundy Center 38 01851-01-15 January 15, 1851 Black Hawk County Felix Grundy (1777–1840), United States Senator &0000000000012369.00000012,369 &0000000000000503.000000503 sq mi
(&0000000000001303.0000001,303 km2)		 State map highlighting Grundy County
Guthrie County 077 Guthrie Center 58 01851-07-08 July 8, 1851 Jackson County Edwin B. Guthrie, officer in Mexican-American War &0000000000011353.00000011,353 &0000000000000591.000000591 sq mi
(&0000000000001531.0000001,531 km2)		 State map highlighting Guthrie County
Hamilton County 079 Webster City 36 01856-12-22 December 22, 1856 Webster County William W. Hamilton, President of the Iowa Senate (1856–1857) &0000000000016438.00000016,438 &0000000000000577.000000577 sq mi
(&0000000000001494.0000001,494 km2)		 State map highlighting Hamilton County
Hancock County 081 Garner 16 01851-01-15 January 15, 1851 Wright County John Hancock (1737–1793), President of the First Continental Congress &0000000000012100.00000012,100 &0000000000000571.000000571 sq mi
(&0000000000001479.0000001,479 km2)		 State map highlighting Hancock County
Hardin County 083 Eldora 37 01851-01-15 January 15, 1851 Black Hawk County John J. Hardin (1810–1847), prominent soldier in the Black Hawk War &0000000000018812.00000018,812 &0000000000000569.000000569 sq mi
(&0000000000001474.0000001,474 km2)		 State map highlighting Hardin County
Harrison County 085 Logan 55 01851-01-15 January 15, 1851 Pottawattamie County William Henry Harrison (1773–1841), ninth President of the United States &0000000000015666.00000015,666 &0000000000000697.000000697 sq mi
(&0000000000001805.0000001,805 km2)		 State map highlighting Harrison County
Henry County 087 Mount Pleasant 88 01836-12-07 December 7, 1836 Wisconsin Territory Either[11] Henry Dodge (1782–1867), governor of Wisconsin Territory; or James Dougherty Henry, general in the Black Hawk War &0000000000020336.00000020,336 &0000000000000434.000000434 sq mi
(&0000000000001124.0000001,124 km2)		 State map highlighting Henry County
Howard County 089 Cresco 9 01851-01-15 January 15, 1851 Chickasaw County Tilghman Ashurst Howard (1797–1844), congressman &0000000000009932.0000009,932 &0000000000000473.000000473 sq mi
(&0000000000001225.0000001,225 km2)		 State map highlighting Howard County
Humboldt County 091 Dakota City 26 01857-02-26 February 26, 1857 Webster County Alexander von Humboldt (1769–1859), German scientist &0000000000010381.00000010,381 &0000000000000434.000000434 sq mi
(&0000000000001124.0000001,124 km2)		 State map highlighting Humboldt County
Ida County 093 Ida Grove 32 01851-01-15 January 15, 1851 Cherokee County Mount Ida in Greece or the woman's name Ida &0000000000007837.0000007,837 &0000000000000432.000000432 sq mi
(&0000000000001119.0000001,119 km2)		 State map highlighting Ida County
Iowa County 095 Marengo 63 01843-02-17 February 17, 1843 Washington County Iowa River, river that flows through the county, or Ioway Native American tribe &0000000000015671.00000015,671 &0000000000000586.000000586 sq mi
(&0000000000001518.0000001,518 km2)		 State map highlighting Iowa County
Jackson County 097 Maquoketa 54 01837-12-21 December 21, 1837 Wisconsin Territory Andrew Jackson (1767–1845), seventh President of the United States &0000000000020296.00000020,296 &0000000000000636.000000636 sq mi
(&0000000000001647.0000001,647 km2)		 State map highlighting Jackson County
Jasper County 099 Newton 61 01846-01-13 January 13, 1846 Mahaska County William Jasper (1750–1779), sergeant in the Revolutionary War &0000000000037213.00000037,213 &0000000000000730.000000730 sq mi
(&0000000000001891.0000001,891 km2)		 State map highlighting Jasper County
Jefferson County 101 Fairfield 87 01839-01-21 January 21, 1839 Native American lands Thomas Jefferson (1743–1826), third President of the United States &0000000000016181.00000016,181 &0000000000000435.000000435 sq mi
(&0000000000001127.0000001,127 km2)		 State map highlighting Jefferson County
Johnson County 103 Iowa City 64 01837-12-21 December 21, 1837 Des Moines County, Iowa and Wisconsin Territory Richard Mentor Johnson (1780–1850), Vice President of the United States 1837-1841 &0000000000111006.000000111,006 &0000000000000614.000000614 sq mi
(&0000000000001590.0000001,590 km2)		 State map highlighting Johnson County
Jones County 105 Anamosa 53 01837-12-21 December 21, 1837 Wisconsin Territory George Wallace Jones (1804–1896), United States Senator from Iowa &0000000000020221.00000020,221 &0000000000000575.000000575 sq mi
(&0000000000001489.0000001,489 km2)		 State map highlighting Jones County
Keokuk County 107 Sigourney 74 01837-12-21 December 21, 1837 Washington County Keokuk (1767–1848), chief of the Sac Native American tribe &0000000000011400.00000011,400 &0000000000000579.000000579 sq mi
(&0000000000001500.0000001,500 km2)		 State map highlighting Keokuk County
Kossuth County 109 Algona 5 01851-01-15 January 15, 1851 Webster County Lajos Kossuth (1802–1894), Hungarian patriot &0000000000017163.00000017,163 &0000000000000973.000000973 sq mi
(&0000000000002520.0000002,520 km2)		 State map highlighting Kossuth County
Lee County 111 Fort Madison and Keokuk 99 01836-12-07 December 7, 1836 Des Moines County William Elliott Lee, businessman; or Robert E. Lee (1807–1870), Confederate general &0000000000038052.00000038,052 &0000000000000517.000000517 sq mi
(&0000000000001339.0000001,339 km2)		 State map highlighting Lee County
Linn County 113 Cedar Rapids 52 01837-12-21 December 21, 1837 Wisconsin Territory Lewis Fields Linn (1795–1843), doctor and United States Senator from Missouri &0000000000191701.000000191,701 &0000000000000718.000000718 sq mi
(&0000000000001860.0000001,860 km2)		 State map highlighting Linn County
Louisa County 115 Wapello 76 01836-12-07 December 7, 1836 Des Moines County Either[12] Louisa Massey, a woman who avenged the death of her brother; or Louisa County, Virginia &0000000000012183.00000012,183 &0000000000000402.000000402 sq mi
(&0000000000001041.0000001,041 km2)		 State map highlighting Louisa County
Lucas County 117 Chariton 84 01846-01-13 January 13, 1846 Monroe County Robert Lucas (1781–1853), first Governor of Iowa Territory &0000000000009422.0000009,422 &0000000000000431.000000431 sq mi
(&0000000000001116.0000001,116 km2)		 State map highlighting Lucas County
Lyon County 119 Rock Rapids 1 01851-01-15 January 15, 1851 Woodbury County, Iowa Nathaniel Lyon (1818–1861), first Union general to be killed in the American Civil War, (formerly named Buncombe County) &0000000000011763.00000011,763 &0000000000000588.000000588 sq mi
(&0000000000001523.0000001,523 km2)		 State map highlighting Lyon County
Madison County 121 Winterset 70 01846-01-13 January 13, 1846 Polk County James Madison (1751–1836), fourth President of the United States &0000000000014019.00000014,019 &0000000000000561.000000561 sq mi
(&0000000000001453.0000001,453 km2)		 State map highlighting Madison County
Mahaska County 123 Oskaloosa 73 01843-02-17 February 17, 1843 Fox and Sac Indian lands Mahaska (1784–1834), chief of the Ioway Native American tribe &0000000000022335.00000022,335 &0000000000000571.000000571 sq mi
(&0000000000001479.0000001,479 km2)		 State map highlighting Mahaska County
Marion County 125 Knoxville 72 01845-06-10 June 10, 1845 Washington County Francis Marion (1732–1795), general in the Revolutionary War &0000000000032052.00000032,052 &0000000000000554.000000554 sq mi
(&0000000000001435.0000001,435 km2)		 State map highlighting Marion County
Marshall County 127 Marshalltown 49 01846-01-13 January 13, 1846 Jasper County John Marshall (1755–1835), fourth Chief Justice of the United States Supreme Court &0000000000039311.00000039,311 &0000000000000572.000000572 sq mi
(&0000000000001481.0000001,481 km2)		 State map highlighting Marshall County
Mills County 129 Glenwood 79 01851-01-15 January 15, 1851 Pottawattamie County Frederick Mills, major killed during the Battle of Churubusco in the Mexican-American War &0000000000014547.00000014,547 &0000000000000437.000000437 sq mi
(&0000000000001132.0000001,132 km2)		 State map highlighting Mills County
Mitchell County 131 Osage 8 01851-01-15 January 15, 1851 Chickasaw County John Mitchel (1815–1875), Irish patriot &0000000000010874.00000010,874 &0000000000000469.000000469 sq mi
(&0000000000001215.0000001,215 km2)		 State map highlighting Mitchell County
Monona County 133 Onawa 43 01851-01-15 January 15, 1851 Harrison County Word of Native American origin or Monona, Iowa &0000000000010020.00000010,020 &0000000000000693.000000693 sq mi
(&0000000000001795.0000001,795 km2)		 State map highlighting Monona County
Monroe County 135 Albia 85 01843-02-17 February 17, 1843 Wapello County James Monroe (1758–1831), fifth President of the United States &0000000000008016.0000008,016 &0000000000000433.000000433 sq mi
(&0000000000001121.0000001,121 km2)		 State map highlighting Monroe County
Montgomery County 137 Red Oak 80 01851-01-15 January 15, 1851 Polk County Richard Montgomery (1738–1775), general in the Revolutionary War &0000000000011771.00000011,771 &0000000000000424.000000424 sq mi
(&0000000000001098.0000001,098 km2)		 State map highlighting Montgomery County
Muscatine County 139 Muscatine 77 01836-12-07 December 7, 1836 Des Moines County Muscatine Native American tribe; or Muscatine Island in the Mississippi River &0000000000041722.00000041,722 &0000000000000439.000000439 sq mi
(&0000000000001137.0000001,137 km2)		 State map highlighting Muscatine County
O'Brien County 141 Primghar 13 01851-01-15 January 15, 1851 Cherokee County William Smith O'Brien (1803–1864), Irish revolutionary &0000000000015102.00000015,102 &0000000000000573.000000573 sq mi
(&0000000000001484.0000001,484 km2)		 State map highlighting O'Brien County
Osceola County 143 Sibley 2 01851-01-15 January 15, 1851 Woodbury County Osceola (1804–1838), Native American leader &0000000000007003.0000007,003 &0000000000000399.000000399 sq mi
(&0000000000001033.0000001,033 km2)		 State map highlighting Osceola County
Page County 145 Clarinda 91 01847-02-24 February 24, 1847 Pottawattamie County John Page, officer killed in Battle of Palo Alto in the Mexican-American War &0000000000016976.00000016,976 &0000000000000535.000000535 sq mi
(&0000000000001386.0000001,386 km2)		 State map highlighting Page County
Palo Alto County 147 Emmetsburg 15 01851-01-15 January 15, 1851 Kossuth County Battle of Palo Alto in the Mexican-American War &0000000000010147.00000010,147 &0000000000000564.000000564 sq mi
(&0000000000001461.0000001,461 km2)		 State map highlighting Palo Alto County
Plymouth County 149 Le Mars 22 01851-01-15 January 15, 1851 Woodbury County Landing place of the Pilgrims who came to America on the Mayflower &0000000000024849.00000024,849 &0000000000000864.000000864 sq mi
(&0000000000002238.0000002,238 km2)		 State map highlighting Plymouth County
Pocahontas County 151 Pocahontas 25 01851-01-15 January 15, 1851 Greene County and Humboldt County Pocahantas (1595–1618), famous Native American woman &0000000000008662.0000008,662 &0000000000000578.000000578 sq mi
(&0000000000001497.0000001,497 km2)		 State map highlighting Pocahontas County
Polk County 153 Des Moines 60 01846-01-13 January 13, 1846 Native American lands James K. Polk (1795–1849), eleventh President of the United States &0000000000374601.000000374,601 &0000000000000570.000000570 sq mi
(&0000000000001476.0000001,476 km2)		 State map highlighting Polk County
Pottawattamie County 155 Council Bluffs 67 01847-02-24 February 24, 1847 Native American lands Pottawattamie Native American tribe &0000000000087704.00000087,704 &0000000000000954.000000954 sq mi
(&0000000000002471.0000002,471 km2)		 State map highlighting Pottawattamie County
Poweshiek County 157 Montezuma 62 01843-02-17 February 17, 1843 Mesquakie Indian lands Poweshiek, chief of the Fox tribe &0000000000018815.00000018,815 &0000000000000585.000000585 sq mi
(&0000000000001515.0000001,515 km2)		 State map highlighting Poweshiek County
Ringgold County 159 Mount Ayr 93 01847-02-24 February 24, 1847 Taylor County Samuel Ringgold (1796–1846), major killed in the Mexican-American War &0000000000005469.0000005,469 &0000000000000538.000000538 sq mi
(&0000000000001393.0000001,393 km2)		 State map highlighting Ringgold County
Sac County 161 Sac City 33 01851-01-15 January 15, 1851 Greene County Sac Native American tribe &0000000000011529.00000011,529 &0000000000000576.000000576 sq mi
(&0000000000001492.0000001,492 km2)		 State map highlighting Sac County
Scott County 163 Davenport 78 01837-12-21 December 21, 1837 Wisconsin Territory Winfield Scott (1786–1866), U.S. Army General during the War of 1812 &0000000000158668.000000158,668 &0000000000000458.000000458 sq mi
(&0000000000001186.0000001,186 km2)		 State map highlighting Scott County
Shelby County 165 Harlan 56 01851-01-15 January 15, 1851 Cass County Isaac Shelby (1750–1826), general in the Revolutionary War and the War of 1812 &0000000000013173.00000013,173 &0000000000000591.000000591 sq mi
(&0000000000001531.0000001,531 km2)		 State map highlighting Shelby County
Sioux County 167 Orange City 12 01851-01-15 January 15, 1851 Plymouth County Sioux Native American tribe &0000000000031589.00000031,589 &0000000000000768.000000768 sq mi
(&0000000000001989.0000001,989 km2)		 State map highlighting Sioux County
Story County 169 Nevada 48 01846-01-13 January 13, 1846 Boone County, Jasper County, and Polk County Joseph Story (1779–1845), United States Supreme Court justice &0000000000079981.00000079,981 &0000000000000573.000000573 sq mi
(&0000000000001484.0000001,484 km2)		 State map highlighting Story County
Tama County 171 Toledo 50 01843-02-17 February 17, 1843 Benton County and Boone County Either[13] Taimah, Fox chief; or Taomah, wife of Poweshiek; or Potama, Native American chief &0000000000018103.00000018,103 &0000000000000721.000000721 sq mi
(&0000000000001867.0000001,867 km2)		 State map highlighting Tama County
Taylor County 173 Bedford 92 01847-02-24 February 24, 1847 Page County Zachary Taylor (1784–1850), twelfth President of the United States &0000000000006958.0000006,958 &0000000000000534.000000534 sq mi
(&0000000000001383.0000001,383 km2)		 State map highlighting Taylor County
Union County 175 Creston 82 01851-01-15 January 15, 1851 Clarke County "The Union", name for the northern states during the American Civil War &0000000000012309.00000012,309 &0000000000000424.000000424 sq mi
(&0000000000001098.0000001,098 km2)		 State map highlighting Union County
Van Buren County 177 Keosauqua 98 01836-12-07 December 7, 1836 Des Moines County Martin Van Buren (1782–1862), eighth President of the United States &0000000000007809.0000007,809 &0000000000000485.000000485 sq mi
(&0000000000001256.0000001,256 km2)		 State map highlighting Van Buren County
Wapello County 179 Ottumwa 86 01843-02-17 February 17, 1843 Native American lands Wapello, chief of the Fox Native American tribe &0000000000036051.00000036,051 &0000000000000432.000000432 sq mi
(&0000000000001119.0000001,119 km2)		 State map highlighting Wapello County
Warren County 181 Indianola 71 01846-01-13 January 13, 1846 Polk County Joseph Warren (1741–1775), General in the Revolutionary War &0000000000040671.00000040,671 &0000000000000572.000000572 sq mi
(&0000000000001481.0000001,481 km2)		 State map highlighting Warren County
Washington County 183 Washington 75 01839-01-25 January 25, 1839 Wisconsin Territory George Washington (1732–1799), first President of the United States &0000000000020670.00000020,670 &0000000000000569.000000569 sq mi
(&0000000000001474.0000001,474 km2)		 State map highlighting Washington County
Wayne County 185 Corydon 95 01846-01-13 January 13, 1846 Appanoose County Anthony Wayne (1745–1796), General in the Revolutionary War &0000000000006730.0000006,730 &0000000000000526.000000526 sq mi
(&0000000000001362.0000001,362 km2)		 State map highlighting Wayne County
Webster County 187 Fort Dodge 35 01853-01-12 January 12, 1853 Risley County and Yell County (defunct counties)[14] Daniel Webster (1782–1852), statesman &0000000000040235.00000040,235 &0000000000000715.000000715 sq mi
(&0000000000001852.0000001,852 km2)		 State map highlighting Webster County
Winnebago County 189 Forest City 6 01851-01-15 January 15, 1851 Kossuth County Winnebago Native American tribe &0000000000011723.00000011,723 &0000000000000400.000000400 sq mi
(&0000000000001036.0000001,036 km2)		 State map highlighting Winnebago County
Winneshiek County 191 Decorah 10 01847-02-20 February 20, 1847 Native American lands Winneshiek, chief of the Winnebago Native American tribe &0000000000021310.00000021,310 &0000000000000690.000000690 sq mi
(&0000000000001787.0000001,787 km2)		 State map highlighting Winneshiek County
Woodbury County 193 Sioux City 31 01853-01-12 January 12, 1853 Polk County Levi Woodbury (1789–1851), Governor of New Hampshire, (formerly named Wahkaw County) &0000000000103877.000000103,877 &0000000000000873.000000873 sq mi
(&0000000000002261.0000002,261 km2)		 State map highlighting Woodbury County
Worth County 195 Northwood 7 01851-01-15 January 15, 1851 Mitchell County William Jenkins Worth (1794–1849), officer in the Black Hawk War and the Mexican-American War &0000000000007909.0000007,909 &0000000000000400.000000400 sq mi
(&0000000000001036.0000001,036 km2)		 State map highlighting Worth County
Wright County 197 Clarion 27 01851-01-15 January 15, 1851 Webster County and Kossuth County Silas Wright (1795–1847), Governor of New York, and Joseph Albert Wright (1810–1867), Governor of Indiana &0000000000014334.00000014,334 &0000000000000581.000000581 sq mi
(&0000000000001505.0000001,505 km2)		 State map highlighting Wright County

[edit] Former counties

The following counties no longer exist:[15]

[edit] See also

[edit] References

  1. ^ "The Creation of Wisconsin Territory". Wisconsin Historical Society. http://www.wisconsinhistory.org/turningpoints/tp-014/?action=more_essay. Retrieved 2008-08-17. 
  2. ^ "Chronology of Wisconsin History". Ney Family History. http://www.eskimo.com/~lisanne/ney/wischron.htm. Retrieved 2008-08-17. 
  3. ^ "Statehood Dates". http://www.50states.com/statehood.htm. Retrieved 2008-08-17. 
  4. ^ a b c d e National Association of Counties. "NACo - Find a county". http://www.naco.org/Template.cfm?Section=Find_a_County&Template=/cffiles/counties/state.cfm&state.cfm&statecode=IA. Retrieved 2008-04-30. 
  5. ^ "Iowa: Consolidated Chronology of State and County Boundaries". http://historical-county.newberry.org/website/Iowa/documents/IA_Consolidated_Chronology.htm. Retrieved 2008-05-25. 
  6. ^ a b "Iowa Commentary". Iowa Atlas of Historical County Boundaries. http://historical-county.newberry.org/website/Iowa/documents/IA_Commentary.htm. Retrieved 2008-08-16. 
  7. ^ U.S. Census Bureau. "Polk County Quickfacts". State & County QuickFacts. http://quickfacts.census.gov/qfd/states/19/19153.html. Retrieved 2008-08-17. 
  8. ^ "EPA County FIPS Code Listing". EPA.gov. http://www.epa.gov/enviro/html/codes/ia.html. Retrieved 2008-02-23. 
  9. ^ a b Pratt, LeRoy G. (1977). The Counties and Courthouses of Iowa. Mason City, Iowa: Klipto Printing and Office Supply Company. 
  10. ^ "Formation of Counties in Iowa". http://www.iagenweb.org/state/places/formation.htm. Retrieved 2007-08-27. 
  11. ^ "Henry County, Iowa". http://www.rootsweb.ancestry.com/~iahenry/henrycocourthouse.htm. Retrieved 2008-08-17. "According to most sources, Henry County (440 square miles) was named for Henry Dodge (1782-1867), who served in the Black Hawk War and other Indian wars and governor of Wisconsin Territory (1836-1841); others credit the county’s name to General James Dougherty Henry (1797-1834), a hero of the Black Hawk War." 
  12. ^ "Louisa County, Iowa". Official website. http://www.louisacountyiowa.org/. Retrieved 2008-08-17. "According to some authorities, the county was named for Louisa Massey, who gained fame during her time because she avenged the murder of her brother by shooting the man responsible. Other historians claim the name was given in honor of Louisa County, Virginia. There are 418 square miles (1,080 km2) in Louisa County." 
  13. ^ John Adams, Tama County Auditor (2002). "Tama County, Iowa". e-referencedesk.com. Clarksville, VA: Web Marketing Services, Inc. LLC. http://www.e-referencedesk.com/resources/counties/iowa/tama.html. Retrieved 2008-10-02. "The origin of the naming of Tama County is somewhat disputed. Some authorities say the name comes from Taimah, a Fox Indian Chief. Others say it comes from Taomah, wife of Poweshiek--another Fox Indian Tribe Chief. Still others say the county is named after the Indian Chief Potama or Pottama." 
  14. ^ Pratt, H. M. (1913). History of Fort Dodge and Webster County, Iowa. 
  15. ^ "Iowa County Formation Table". Iowa Genweb Project. http://www.iagenweb.org/state/places/formation.htm. Retrieved 2008-08-16. 
  16. ^ "Bancroft County, Iowa". http://www.past2present.org/own/counties/Bancroft.htm. Retrieved 2008-08-16. 
  17. ^ "Cook County, Iowa". http://www.past2present.org/own/counties/Cook.htm. Retrieved 2008-08-16. 
  18. ^ "Crocker County, Iowa". http://www.past2present.org/own/counties/Crocker.htm. Retrieved 2008-08-16. 
  19. ^ "Risley County, Iowa". http://www.past2present.org/own/counties/Risley.htm. Retrieved 2008-08-16. 
  20. ^ "Yell County, Iowa". http://www.past2present.org/own/counties/Yell.htm. Retrieved 2008-08-16. 

[edit] External links

v • d • e

 
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List of U.S. counties & county-equivalents
by political division (state / capital federal district)
Retrieved from "http://en.wikipedia.org/wiki/List_of_counties_in_Iowa"



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