County
| FIPS Code [1] | County seat [2] | Established [2] | Origin
| Etymology
| County Code
| Population [2] | Area [2] | Map
|
| Allen County | 001 | Iola | 1855 | One of the original 36 counties | William Allen | AL | &0000000000014385.00000014,385 | &0000000000000503.000000503 sq mi (&0000000000001303.0000001,303 km2) |  |
| Anderson County | 003 | Garnett | 1855 | One of the original 36 counties | Joseph C. Anderson | AN | &0000000000008110.0000008,110 | &0000000000000583.000000583 sq mi (&0000000000001510.0000001,510 km2) |  |
| Atchison County | 005 | Atchison | 1855 | One of the original 36 counties | David Rice Atchison | AT | &0000000000016774.00000016,774 | &0000000000000432.000000432 sq mi (&0000000000001119.0000001,119 km2) |  |
| Barber County | 007 | Medicine Lodge | 1867 | From unorganized area | Thomas W. Barber | BA | &0000000000005307.0000005,307 | &0000000000001134.0000001,134 sq mi (&0000000000002937.0000002,937 km2) |  |
| Barton County | 009 | Great Bend | 1867 | From unorganized area | Clara Barton | BT | &0000000000028205.00000028,205 | &0000000000000894.000000894 sq mi (&0000000000002315.0000002,315 km2) |  |
| Bourbon County | 011 | Fort Scott | 1855 | One of the original 36 counties | Bourbon County Ky. | BB | &0000000000015379.00000015,379 | &0000000000000637.000000637 sq mi (&0000000000001650.0000001,650 km2) |  |
| Brown County | 013 | Hiawatha | 1855 | One of the original 36 counties (Formerly Browne County) | Albert Gallatin Brown | BR | &0000000000010724.00000010,724 | &0000000000000571.000000571 sq mi (&0000000000001479.0000001,479 km2) |  |
| Butler County | 015 | El Dorado | 1855 | One of the original 36 counties | Andrew Pickens Butler | BU | &0000000000059482.00000059,482 | &0000000000001428.0000001,428 sq mi (&0000000000003699.0000003,699 km2) |  |
| Chase County | 017 | Cottonwood Falls | 1859 | Formed from Butler and Wise counties | Salmon Portland Chase | CS | &0000000000003030.0000003,030 | &0000000000000776.000000776 sq mi (&0000000000002010.0000002,010 km2) |  |
| Chautauqua County | 019 | Sedan | 1875 | Formed from Howard County | Chautauqua County NY | CQ | &0000000000004359.0000004,359 | &0000000000000642.000000642 sq mi (&0000000000001663.0000001,663 km2) |  |
| Cherokee County | 021 | Columbus | 1855 | One of the original 36 counties (Formerly McGee County) | Cherokee Native Americans | CK | &0000000000022605.00000022,605 | &0000000000000587.000000587 sq mi (&0000000000001520.0000001,520 km2) |  |
| Cheyenne County | 023 | Saint Francis | 1873 | From unorganized area | Cheyenne Native Americans | CN | &0000000000003165.0000003,165 | &0000000000001020.0000001,020 sq mi (&0000000000002642.0000002,642 km2) |  |
| Clark County | 025 | Ashland | 1885 | Formed from Ford County | Charles F. Clarke[3] | CA | &0000000000002390.0000002,390 | &0000000000000975.000000975 sq mi (&0000000000002525.0000002,525 km2) |  |
| Clay County | 027 | Clay Center | 1857 | From unorganized area | Henry Clay | CY | &0000000000008822.0000008,822 | &0000000000000644.000000644 sq mi (&0000000000001668.0000001,668 km2) |  |
| Cloud County | 029 | Concordia | 1866 | Formed from Washington (Formerly Shirley County) | William F. Cloud | CD | &0000000000010268.00000010,268 | &0000000000000716.000000716 sq mi (&0000000000001854.0000001,854 km2) |  |
| Coffey County | 031 | Burlington | 1855 | One of the original 36 counties | A.M. Coffey | CF | &0000000000008865.0000008,865 | &0000000000000630.000000630 sq mi (&0000000000001632.0000001,632 km2) |  |
| Comanche County | 033 | Coldwater | 1867 | From unorganized area | Comache Native Americans | CM | &0000000000001967.0000001,967 | &0000000000000788.000000788 sq mi (&0000000000002041.0000002,041 km2) |  |
| Cowley County | 035 | Winfield | 1867 | Formed from Butler County | Matthew Cowley | CL | &0000000000036291.00000036,291 | &0000000000001126.0000001,126 sq mi (&0000000000002916.0000002,916 km2) |  |
| Crawford County | 037 | Girard | 1867 | Bourbon and Cherokee Counties | Samuel J. Crawford | CR | &0000000000038242.00000038,242 | &0000000000000593.000000593 sq mi (&0000000000001536.0000001,536 km2) |  |
| Decatur County | 039 | Oberlin | 1873 | From unorganized area | Stephen Decatur | DC | &0000000000003472.0000003,472 | &0000000000000894.000000894 sq mi (&0000000000002315.0000002,315 km2) |  |
| Dickinson County | 041 | Abilene | 1857 | From unorganized area | Daniel Stevens Dickinson | DK | &0000000000019344.00000019,344 | &0000000000000848.000000848 sq mi (&0000000000002196.0000002,196 km2) |  |
| Doniphan County | 043 | Troy | 1855 | One of the original 36 counties | A.W. Doniphan | DP | &0000000000008249.0000008,249 | &0000000000000392.000000392 sq mi (&0000000000001015.0000001,015 km2) |  |
| Douglas County | 045 | Lawrence | 1855 | One of the original 36 counties | Stephen Arnold Douglas | DG | &0000000000099962.00000099,962 | &0000000000000457.000000457 sq mi (&0000000000001184.0000001,184 km2) |  |
| Edwards County | 047 | Kinsley | 1874 | Formed from Kiowa County | John H. Edwards | ED | &0000000000003449.0000003,449 | &0000000000000622.000000622 sq mi (&0000000000001611.0000001,611 km2) |  |
| Elk County | 049 | Howard | 1875 | Formed from Howard County | Elk River | EK | &0000000000003261.0000003,261 | &0000000000000648.000000648 sq mi (&0000000000001678.0000001,678 km2) |  |
| Ellis County | 051 | Hays | 1867 | From unorganized area | George Ellis | EL | &0000000000027507.00000027,507 | &0000000000000900.000000900 sq mi (&0000000000002331.0000002,331 km2) |  |
| Ellsworth County | 053 | Ellsworth | 1867 | From unorganized area | Fort Ellsworth | EW | &0000000000006525.0000006,525 | &0000000000000716.000000716 sq mi (&0000000000001854.0000001,854 km2) |  |
| Finney County | 055 | Garden City | 1883 | Formed from Arapahoe, Grant, Kearney and Sequoyah Counties | David Wesley Finney | FI | &0000000000040523.00000040,523 | &0000000000001300.0000001,300 sq mi (&0000000000003367.0000003,367 km2) |  |
| Ford County | 057 | Dodge City | 1867 | From unorganized area | James H. Ford | FO | &0000000000032458.00000032,458 | &0000000000001099.0000001,099 sq mi (&0000000000002846.0000002,846 km2) |  |
| Franklin County | 059 | Ottawa | 1855 | One of the original 36 counties | Benjamin Franklin | FR | &0000000000024784.00000024,784 | &0000000000000574.000000574 sq mi (&0000000000001487.0000001,487 km2) |  |
| Geary County | 061 | Junction City | 1855 | One of the original 36 counties (Formerly Davis County) | John White Geary | GE | &0000000000027947.00000027,947 | &0000000000000384.000000384 sq mi (&0000000000000995.000000995 km2) |  |
| Gove County | 063 | Gove | 1868 | From unorganized area | Grenville L. Gove | GO | &0000000000003068.0000003,068 | &0000000000001072.0000001,072 sq mi (&0000000000002776.0000002,776 km2) |  |
| Graham County | 065 | Hill City | 1867 | From unorganized area | John L. Graham | GH | &0000000000002946.0000002,946 | &0000000000000898.000000898 sq mi (&0000000000002326.0000002,326 km2) |  |
| Grant County | 067 | Ulysses | 1888 | Formed from Finney and Hamilton Counties | Ulysses Simpson Grant | GT | &0000000000007909.0000007,909 | &0000000000000575.000000575 sq mi (&0000000000001489.0000001,489 km2) |  |
| Gray County | 069 | Cimarron | 1887 | Formed from Finney and Ford Counties | Alfred Gray | GY | &0000000000005904.0000005,904 | &0000000000000869.000000869 sq mi (&0000000000002251.0000002,251 km2) |  |
| Greeley County | 071 | Tribune | 1873 | From unorganized area | Horace Greeley | GL | &0000000000001534.0000001,534 | &0000000000000778.000000778 sq mi (&0000000000002015.0000002,015 km2) |  |
| Greenwood County | 073 | Eureka | 1855 | One of the original 36 counties | Alfred B. Greenwood | GW | &0000000000007673.0000007,673 | &0000000000001140.0000001,140 sq mi (&0000000000002953.0000002,953 km2) |  |
| Hamilton County | 075 | Syracuse | 1873 | From unorganized area | Alexander Hamilton | HM | &0000000000002670.0000002,670 | &0000000000000996.000000996 sq mi (&0000000000002580.0000002,580 km2) |  |
| Harper County | 077 | Anthony | 1867 | From unorganized area | Marion Harper | HP | &0000000000006536.0000006,536 | &0000000000000802.000000802 sq mi (&0000000000002077.0000002,077 km2) |  |
| Harvey County | 079 | Newton | 1872 | Formed from McPherson, Sedgwick and Reno Counties | James M. Harvey | HV | &0000000000032869.00000032,869 | &0000000000000539.000000539 sq mi (&0000000000001396.0000001,396 km2) |  |
| Haskell County | 081 | Sublette | 1887 | Formed from Finney and Ford Counties | Dudley Chase Haskell | HS | &0000000000004307.0000004,307 | &0000000000000577.000000577 sq mi (&0000000000001494.0000001,494 km2) |  |
| Hodgeman County | 083 | Jetmore | 1867 | From unorganized area (Formerly Hageman County) | Amos Hodgeman | HG | &0000000000002085.0000002,085 | &0000000000000860.000000860 sq mi (&0000000000002227.0000002,227 km2) |  |
| Jackson County | 085 | Holton | 1855 | One of the original 36 counties (Formerly Calhoun County) | Andrew Jackson | JA | &0000000000012657.00000012,657 | &0000000000000657.000000657 sq mi (&0000000000001702.0000001,702 km2) |  |
| Jefferson County | 087 | Oskaloosa | 1855 | One of the original 36 counties | Thomas Jefferson | JF | &0000000000018426.00000018,426 | &0000000000000536.000000536 sq mi (&0000000000001388.0000001,388 km2) |  |
| Jewell County | 089 | Mankato | 1867 | From unorganized area | Lewis R. Jewell | JW | &0000000000003791.0000003,791 | &0000000000000909.000000909 sq mi (&0000000000002354.0000002,354 km2) |  |
| Johnson County | 091 | Olathe | 1855 | One of the original 36 counties | Thomas Johnson | JO | &0000000000451086.000000451,086 | &0000000000000477.000000477 sq mi (&0000000000001235.0000001,235 km2) |  |
| Kearny County | 093 | Lakin | 1887 | Formed from Finney and Hamilton Counties | Philip Kearny | KE | &0000000000004531.0000004,531 | &0000000000000870.000000870 sq mi (&0000000000002253.0000002,253 km2) |  |
| Kingman County | 095 | Kingman | 1872 | Harper and Reno Counties | Samuel A. Kingman | KM | &0000000000008673.0000008,673 | &0000000000000864.000000864 sq mi (&0000000000002238.0000002,238 km2) |  |
| Kiowa County | 097 | Greensburg | 1886 | Formed from Comanche and Edwards Counties | Kiowa Native Americans | KW | &0000000000003278.0000003,278 | &0000000000000722.000000722 sq mi (&0000000000001870.0000001,870 km2) |  |
| Labette County | 099 | Oswego | 1867 | Formed from Neosho County | Pierre La Bette | LB | &0000000000022835.00000022,835 | &0000000000000649.000000649 sq mi (&0000000000001681.0000001,681 km2) |  |
| Lane County | 101 | Dighton | 1873 | From unorganized area | James H. Lane | LE | &0000000000002155.0000002,155 | &0000000000000717.000000717 sq mi (&0000000000001857.0000001,857 km2) |  |
| Leavenworth County | 103 | Leavenworth | 1855 | One of the original 36 counties | Henry Leavenworth | LV | &0000000000068691.00000068,691 | &0000000000000463.000000463 sq mi (&0000000000001199.0000001,199 km2) |  |
| Lincoln County | 105 | Lincoln | 1867 | From unorganized area | Abraham Lincoln | LC | &0000000000003578.0000003,578 | &0000000000000719.000000719 sq mi (&0000000000001862.0000001,862 km2) |  |
| Linn County | 107 | Mound City | 1855 | One of the original 36 counties | Lewis Fields Linn | LN | &0000000000009570.0000009,570 | &0000000000000599.000000599 sq mi (&0000000000001551.0000001,551 km2) |  |
| Logan County | 109 | Oakley | 1888 | Formed form Wallace County (Formerly named St. John County) | John Alexander Logan | LG | &0000000000003046.0000003,046 | &0000000000001073.0000001,073 sq mi (&0000000000002779.0000002,779 km2) |  |
| Lyon County | 111 | Emporia | 1855 | One of the original 36 counties (Formerly Breckenridge County) | Nathaniel Lyon | LY | &0000000000035935.00000035,935 | &0000000000000851.000000851 sq mi (&0000000000002204.0000002,204 km2) |  |
| Marion County | 115 | Marion | 1860 | From unorganized area | Francis Marion | MN | &0000000000013361.00000013,361 | &0000000000000943.000000943 sq mi (&0000000000002442.0000002,442 km2) |  |
| Marshall County | 117 | Marysville | 1855 | One of the original 36 counties | Frank J. Marshall | MS | &0000000000010965.00000010,965 | &0000000000000903.000000903 sq mi (&0000000000002339.0000002,339 km2) |  |
| McPherson County | 113 | McPherson | 1867 | From unorganized area | James Birdseye McPherson | MP | &0000000000029554.00000029,554 | &0000000000000900.000000900 sq mi (&0000000000002331.0000002,331 km2) |  |
| Meade County | 119 | Meade | 1885 | Formed from Finney, Ford and Seward Counties | George Gordon Meade | ME | &0000000000004631.0000004,631 | &0000000000000978.000000978 sq mi (&0000000000002533.0000002,533 km2) |  |
| Miami County | 121 | Paola | 1855 | One of the original 36 counties (Formerly Lykins) | Miami Native Americans | MI | &0000000000028351.00000028,351 | &0000000000000577.000000577 sq mi (&0000000000001494.0000001,494 km2) |  |
| Mitchell County | 123 | Beloit | 1867 | From unorganized area | William D. Mitchell | MC | &0000000000006932.0000006,932 | &0000000000000700.000000700 sq mi (&0000000000001813.0000001,813 km2) |  |
| Montgomery County | 125 | Independence | 1867 | Formed from Wilson County | Richard Montgomery | MG | &0000000000036252.00000036,252 | &0000000000000645.000000645 sq mi (&0000000000001671.0000001,671 km2) |  |
| Morris County | 127 | Council Grove | 1855 | One of the original 36 counties (Formerly Wise County) | Thomas Morris | MR | &0000000000006104.0000006,104 | &0000000000000697.000000697 sq mi (&0000000000001805.0000001,805 km2) |  |
| Morton County | 129 | Elkhart | 1886 | Formed from Seward County | Oliver P. Morton | MT | &0000000000003496.0000003,496 | &0000000000000730.000000730 sq mi (&0000000000001891.0000001,891 km2) |  |
| Nemaha County | 131 | Seneca | 1855 | One of the original 36 counties (Formerly Dorn County) | Nemaha River | NM | &0000000000010717.00000010,717 | &0000000000000719.000000719 sq mi (&0000000000001862.0000001,862 km2) |  |
| Neosho County | 133 | Erie | 1855 | One of the original 36 counties (Formerly Dorn County) | Neosho River | NO | &0000000000016997.00000016,997 | &0000000000000572.000000572 sq mi (&0000000000001481.0000001,481 km2) |  |
| Ness County | 135 | Ness City | 1867 | From unorganized area | Noah V. Ness | NS | &0000000000003454.0000003,454 | &0000000000001075.0000001,075 sq mi (&0000000000002784.0000002,784 km2) |  |
| Norton County | 137 | Norton | 1867 | From unorganized area (Formerly Billings (1873-9) | Orloff Norton | NT | &0000000000005953.0000005,953 | &0000000000000878.000000878 sq mi (&0000000000002274.0000002,274 km2) |  |
| Osage County | 139 | Lyndon | 1855 | One of the original 36 counties (Formerly Weller County) | Osage River | OS | &0000000000016712.00000016,712 | &0000000000000704.000000704 sq mi (&0000000000001823.0000001,823 km2) |  |
| Osborne County | 141 | Osborne | 1867 | From unorganized area | Vincent B. Osborne | OB | &0000000000004452.0000004,452 | &0000000000000893.000000893 sq mi (&0000000000002313.0000002,313 km2) |  |
| Ottawa County | 143 | Minneapolis | 1860 | From unorganized area | Ottawa Native Americans | OT | &0000000000006163.0000006,163 | &0000000000000721.000000721 sq mi (&0000000000001867.0000001,867 km2) |  |
| Pawnee County | 145 | Larned | 1867 | From unorganized area | Pawnee Native Americans | PN | &0000000000007233.0000007,233 | &0000000000000754.000000754 sq mi (&0000000000001953.0000001,953 km2) |  |
| Phillips County | 147 | Phillipsburg | 1867 | From unorganized area | William Phillips | PL | &0000000000006001.0000006,001 | &0000000000000886.000000886 sq mi (&0000000000002295.0000002,295 km2) |  |
| Pottawatomie County | 149 | Westmoreland | 1857 | Formed from Calhoun and Riley | Pottawatomie Native Americans | PT | &0000000000018209.00000018,209 | &0000000000000844.000000844 sq mi (&0000000000002186.0000002,186 km2) |  |
| Pratt County | 151 | Pratt | 1867 | From unorganized area | Caleb Pratt | PR | &0000000000009647.0000009,647 | &0000000000000735.000000735 sq mi (&0000000000001904.0000001,904 km2) |  |
| Rawlins County | 153 | Atwood | 1873 | From unorganized area | John Aaron Rawlins | RA | &0000000000002966.0000002,966 | &0000000000001070.0000001,070 sq mi (&0000000000002771.0000002,771 km2) |  |
| Reno County | 155 | Hutchinson | 1867 | From unorganized area | Jesse L. Reno | RN | &0000000000064790.00000064,790 | &0000000000001254.0000001,254 sq mi (&0000000000003248.0000003,248 km2) |  |
| Republic County | 157 | Belleville | 1868 | Formed from Washington County | Republican River | RP | &0000000000005835.0000005,835 | &0000000000000716.000000716 sq mi (&0000000000001854.0000001,854 km2) |  |
| Rice County | 159 | Lyons | 1867 | From unorganized area | Samuel A. Rice | RC | &0000000000010761.00000010,761 | &0000000000000727.000000727 sq mi (&0000000000001883.0000001,883 km2) |  |
| Riley County | 161 | Manhattan | 1855 | One of the original 36 counties | Bennett C. Riley | RL | &0000000000062843.00000062,843 | &0000000000000610.000000610 sq mi (&0000000000001580.0000001,580 km2) |  |
| Rooks County | 163 | Stockton | 1867 | From unorganized area | John C. Rooks | RO | &0000000000005685.0000005,685 | &0000000000000888.000000888 sq mi (&0000000000002300.0000002,300 km2) |  |
| Rush County | 165 | La Crosse | 1867 | From unorganized area | Alexander Rush | RH | &0000000000003551.0000003,551 | &0000000000000718.000000718 sq mi (&0000000000001860.0000001,860 km2) |  |
| Russell County | 167 | Russell | 1867 | From unorganized area | Alva P. Russell | RS | &0000000000007370.0000007,370 | &0000000000000885.000000885 sq mi (&0000000000002292.0000002,292 km2) |  |
| Saline County | 169 | Salina | 1860 | From unorganized area | Saline River | SA | &0000000000053597.00000053,597 | &0000000000000720.000000720 sq mi (&0000000000001865.0000001,865 km2) |  |
| Scott County | 171 | Scott City | 1873 | From unorganized area | Winfield Scott | SC | &0000000000005120.0000005,120 | &0000000000000718.000000718 sq mi (&0000000000001860.0000001,860 km2) |  |
| Sedgwick County | 173 | Wichita | 1867 | Formed from Butler County | John Sedgwick | SG | &0000000000452869.000000452,869 | &0000000000001000.0000001,000 sq mi (&0000000000002590.0000002,590 km2) |  |
| Seward County | 175 | Liberal | 1873 | From unorganized area | William Henry Seward | SW | &0000000000022510.00000022,510 | &0000000000000640.000000640 sq mi (&0000000000001658.0000001,658 km2) |  |
| Shawnee County | 177 | Topeka | 1855 | One of the original 36 counties | Shawnee Native Americans | SN | &0000000000169871.000000169,871 | &0000000000000550.000000550 sq mi (&0000000000001424.0000001,424 km2) |  |
| Sheridan County | 179 | Hoxie | 1873 | From unorganized area | Philip Henry Sheridan | SD | &0000000000002813.0000002,813 | &0000000000000896.000000896 sq mi (&0000000000002321.0000002,321 km2) |  |
| Sherman County | 181 | Goodland | 1873 | From unorganized area | William Tecumseh Sherman | SH | &0000000000006760.0000006,760 | &0000000000001056.0000001,056 sq mi (&0000000000002735.0000002,735 km2) |  |
| Smith County | 183 | Smith Center | 1867 | From unorganized area | Nathan Smith | SM | &0000000000004536.0000004,536 | &0000000000000896.000000896 sq mi (&0000000000002321.0000002,321 km2) |  |
| Stafford County | 185 | Saint John | 1867 | From unorganized area | Lewis Stafford | SF | &0000000000004789.0000004,789 | &0000000000000792.000000792 sq mi (&0000000000002051.0000002,051 km2) |  |
| Stanton County | 187 | Johnson City | 1887 | Formed from Hamilton County | Edwin McMasters Stanton | ST | &0000000000002406.0000002,406 | &0000000000000680.000000680 sq mi (&0000000000001761.0000001,761 km2) |  |
| Stevens County | 189 | Hugoton | 1886 | Formed from Seward County | Thaddeus Stevens | SV | &0000000000005463.0000005,463 | &0000000000000728.000000728 sq mi (&0000000000001886.0000001,886 km2) |  |
| Sumner County | 191 | Wellington | 1867 | Formed from Butler County | Charles Sumner | SU | &0000000000025946.00000025,946 | &0000000000001182.0000001,182 sq mi (&0000000000003061.0000003,061 km2) |  |
| Thomas County | 193 | Colby | 1873 | From unorganized area | George Henry Thomas | TH | &0000000000008180.0000008,180 | &0000000000001075.0000001,075 sq mi (&0000000000002784.0000002,784 km2) |  |
| Trego County | 195 | WaKeeney | 1867 | From unorganized area | Edward P. Trego | TR | &0000000000003319.0000003,319 | &0000000000000888.000000888 sq mi (&0000000000002300.0000002,300 km2) |  |
| Wabaunsee County | 197 | Alma | 1855 | One of the original 36 counties (Formerly Richardson County) | Chief Wabaunsee | WB | &0000000000006885.0000006,885 | &0000000000000798.000000798 sq mi (&0000000000002067.0000002,067 km2) |  |
| Wallace County | 199 | Sharon Springs | 1868 | From unorganized area | W.H.L. Wallace | WA | &0000000000001749.0000001,749 | &0000000000000914.000000914 sq mi (&0000000000002367.0000002,367 km2) |  |
| Washington County | 201 | Washington | 1857 | From unorganized area | George Washington | WS | &0000000000006483.0000006,483 | &0000000000000898.000000898 sq mi (&0000000000002326.0000002,326 km2) |  |
| Wichita County | 203 | Leoti | 1873 | From unorganized area | Wichita Native Americans | WH | &0000000000002531.0000002,531 | &0000000000000719.000000719 sq mi (&0000000000001862.0000001,862 km2) |  |
| Wilson County | 205 | Fredonia | 1855 | One of the original 36 counties | Hiero T. Wilson | WL | &0000000000010332.00000010,332 | &0000000000000574.000000574 sq mi (&0000000000001487.0000001,487 km2) |  |
| Woodson County | 207 | Yates Center | 1855 | One of the original 36 counties | Daniel Woodson | WO | &0000000000003788.0000003,788 | &0000000000000501.000000501 sq mi (&0000000000001298.0000001,298 km2) |  |
| Wyandotte County | 209 | Kansas City | 1859 | Formed from Leavenworth and Johnson Counties | Wyandotte Native Americans | WY | &0000000000157882.000000157,882 | &0000000000000151.000000151 sq mi (&0000000000000391.000000391 km2) |  |