This article is about cities geographically close together. For other uses, see twin city. Twin cities are a special case of two cities or urban centres which are founded in close geographic proximity and then grow into each other over time. The term Twin Cities in the United States refers specifically to the cities Minneapolis and Saint Paul, Minnesota. Cities twinned geographically do not necessarily match demographically, economically, or politically. In the normal course of things, cities which grow into each other's space in this way lose their individual identity and whatever border or barrier still separates them becomes irrelevant as they fuse into one new city. One famous example of this is Budapest in Hungary, which began as two settlements (Buda and Pest) facing each other across the Danube at a strategic fording place along a trade route. But there are twin cities which have been able to resist this final union and have maintained individual identity against the tides of history, economics and demographics. Twin cities often share an airport, into whose airport code are integrated the initials of both cities; DFW (Dallas-Fort Worth) and MSP (Minneapolis-St. Paul) are well-known examples. In some cases, such as Albury/Wodonga in Australia, the two cities are permanently divided by a state border, often one that strictly adheres to a geographical landmark, such as the Murray River that divides New South Wales from Victoria, and thus, Albury from Wodonga. [edit] Examples  A remarkable example of twin cities: Plaza Internacional of the Frontera de la Paz. On the left, Santana do Livramento (Brazil); on the right, Rivera (Uruguay). - Ahmedabad and Gandhinagar in Gujarat State of India are looked upon as merging into a new twin city in-the-process.
- The capital of the medieval Khazar Empire, Atil-Khazaran, which was situated on the western and eastern banks of the Volga River, respectively.
- Islamabad and Rawalpindi, Pakistan
- Dhaka and Gazipur, Bangladesh
- Hyderabad and Secunderabad, India
- Vijayawada and Guntur, India
- Ernakulam and Kochi, India
- Bhubaneswar and Cuttack, India
- Hubli and Dharwad, India
- Mumbai, Navi Mumbai and Thane, India
- Pune and Pimpri-Chinchwad, India
- Kolkata and Howrah, India
- Hatyai and Songkhla, Thailand
- Chiang Mai and Lamphun, Thailand
- Ramallah and al-Bireh, in the West Bank
- Taipei and Keelung, Taiwan
- Taoyuan and Jhongli, Taiwan
- Seoul and Incheon, South Korea
- Tirunelveli and Palayamkottai, India
- Tel Aviv and Jaffa, Israel
[edit] Europe - Brighton and Hove, England, though there are several other smaller towns like Worthing which make up the metropolitan area.
- Chatham and Rochester, England
- Manchester and Salford, England
- Ludwigshafen and Mannheim, Germany
- Ulm and Neu-Ulm, Germany
- Mainz and Wiesbaden, Germany
- Porsgrunn and Skien, Norway
- Sandnes and Stavanger, Norway
- Fredrikstad and Sarpsborg, Norway
- Gorizia, Italy and Nova Gorica, Slovenia
- Gornja Radgona, Slovenia and Bad Radkersburg, Austria
- Buda and Pest, Hungary
- Tornio, Finland and Haparanda, Sweden
- Porto and Vila Nova de Gaia, Portugal
- Zgorzelec, Poland and Görlitz, Germany
- Těšín, Czech Republic and Cieszyn, Poland
- Alcobendas and San Sebastian de los Reyes in Madrid, Spain
[edit] North America - Minneapolis and Saint Paul, popularly known as the "Twin Cities" in North America
- San Bernardino and Riverside in California, the central cities of the area popularly known as the Inland Empire.
- Duluth, Minnesota and Superior, Wisconsin, often referred to as the "Twin Ports"
- Ottawa, Ontario and Gatineau, Quebec; formerly included Hull, Quebec until Hull (and also other municipalities) merged with Gatineau in 2002.
- Halifax, Nova Scotia and Dartmouth, Nova Scotia. Even though both cities were amalgamated into the Halifax Regional Municipality they are separated by Halifax Harbour and still retain separate identities.
- Kitchener, Waterloo and Cambridge, Ontario
- Corte Madera, California and Larkspur, California.[1]
- Detroit, Michigan and Windsor, Ontario
- Kansas City, Kansas and Kansas City, Missouri
- Port Huron, Michigan and Sarnia, Ontario
- Niagara Falls, Ontario and Niagara Falls, New York
- Leominster and Fitchburg, Massachusetts
- Springfield, Massachusetts and Hartford, Connecticut
- Dallas and Fort Worth, Texas, the main cities of the Dallas–Fort Worth Metroplex.
- Des Moines and West Des Moines, Iowa
- Champaign, Illinois and Urbana, Illinois
- South Bend, Indiana and Mishawaka, Indiana
- Minden, Nevada and Gardnerville, Nevada
- Wendover, Utah and West Wendover, Nevada
- Lewiston and Auburn, Maine, sometimes locally referred to as "LA" or the Twin Cities.
- Saco, Maine and Biddeford, Maine
- Bossier City and Shreveport, Louisiana.[2]
- Monroe, Louisiana and West Monroe, Louisiana.[3]
- Utica, New York and Rome, New York
- Brownsville, Texas and Matamoros, Tamaulipas
- Ciudad Juárez, Chihuahua, and El Paso, Texas, exemplify a chain of twin cities on the Mexico–US border, particularly within the Rio Grande valley.
- Laredo, Texas and Nuevo Laredo, Tamaulipas
- Rosenberg, Texas and Richmond, Texas
- Bluefield, Virginia and Bluefield, West Virginia
- Bristol, Virginia and Bristol, Tennessee
- Nogales, Arizona and Nogales, Sonora
- Calexico, California and Mexicali, Baja California
- Sherman and Denison, Texas
- Texarkana, Texas and Texarkana, Arkansas
- Memphis, Tennessee and West Memphis, Arkansas
- Sarasota and Bradenton, Florida
- San Diego, California and Tijuana, Baja California
- Scranton and Wilkes-Barre, Pennsylvania
- Sault Ste. Marie, Michigan and Sault Ste. Marie, Ontario
- Kalamazoo and Battle Creek, Michigan
- Gulfport and Biloxi, Mississippi
- Little Rock and North Little Rock, Arkansas
- Kenosha, Wisconsin and Racine, Wisconsin
- Portland, Oregon and Vancouver, Washington
- Seattle, Washington and Tacoma, Washington
- Bryan, Texas and College Station, Texas
- Reno and Sparks, Nevada
- Waterloo, Iowa and Cedar Falls, Iowa
- Omaha, Nebraska and Council Bluffs, Iowa
- Lansing, Michigan and East Lansing, Michigan
- Sacramento and West Sacramento, California
- Eugene and Springfield, Oregon
- Philadelphia, Pennsylvania and Camden, New Jersey
- Bismarck and Mandan, North Dakota, Also known as Sister Cities to local residents.
- Pierre and Fort Pierre, South Dakota
- Sioux City, Iowa and South Sioux City, Nebraska
- Fort Smith, Arkansas and Van Buren, Arkansas
- Miami and Fort Lauderdale, Florida — two of the primary cities of the South Florida metropolitan area
- Palm Beach, Florida and West Palm Beach, Florida (also in the South Florida metropolitan area)
- Lakeland, Florida and Winter Haven, Florida
- Columbus, Georgia and Phenix City, Alabama
- Auburn, Alabama and Opelika, Alabama
- Anniston, Alabama and Oxford, Alabama
- Benton Harbor and St. Joseph, Michigan, notable for extreme difference in racial demographics. Benton Harbor is over 90% African American, while St. Joseph is about 90% non-Hispanic white.
- Peoria, Illinois and East Peoria, Illinois
- Bloomington, Illinois and Normal, Illinois
- Lancaster, California and Palmdale, California
- Fargo, North Dakota and Moorhead, Minnesota
- Midland, Texas and Odessa, Texas
- Nevada City, California and Grass Valley, California
- San Francisco and Oakland, California
- Fort Myers, Florida and Cape Coral, Florida
- Denver and Aurora, Colorado
- Silverthorne, Colorado and Dillon, Colorado
- Edwards, Colorado and Avon, Colorado
- Carencro, Louisiana and Scott, Louisiana
- Delmar, Delaware and Delmar, Maryland
- McAllen, Texas and Reynosa, Tamaulipas
- Breckenridge, Minnesota and Wahpeton, North Dakota
- Grand Forks, North Dakota and East Grand Forks, Minnesota
- Brainerd, Minnesota and Baxter, Minnesota
- Yuba City, California and Marysville, California
- Eureka, California and Arcata, California
- Colorado City, Arizona and Hildale, Utah
- New York, New York and Newark, New Jersey[citation needed]
- Baltimore, Maryland and Washington, D.C.
- Gregory, Texas and Portland, Texas popularly known as Gregory-Portland or "GP"
- Boston, Massachusetts and Cambridge, Massachusetts
- Lewiston, Idaho and Clarkston, Washington named after the explorers who first visited the region.
- Uhrichsville, Ohio and Dennison, Ohio
- Lancaster, Pennsylvania and York, Pennsylvania
- Fulton, Kentucky and South Fulton, Tennessee
- Winston-Salem, North Carolina and Greensboro, North Carolina
[edit] South America - Leticia, Colombia and Tabatinga, Brazil.
- Rivera, Uruguay and Santana do Livramento, Brazil.
- Vitória and Vila Velha, Brazil.
- Aparecida and Guaratinguetá, Brazil.
- Florianópolis and São José, Brazil.
- Juazeiro and Petrolina, Brazil.
- Recife and Olinda, Brazil.
- Ilhéus and Itabuna, Brazil.
- Foz do Iguaçu, Brazil, Puerto Iguazu, Argentina, and Ciudad del Este, Paraguay.
- Valparaiso and Viña del Mar, Chile
- La Serena and Coquimbo, Chile
- Concepción and Talcahuano, Chile
- Barranquilla and Soledad, Colombia
[edit] Australia [edit] Africa [edit] Fictional twin cities [edit] Tri-Cities [edit] United States - The Tri-Cities, Washington, consisting of Richland, Pasco, and Kennewick, Washington, along the banks of the Columbia River
- The Tri-Cities, Tennessee, Tennessee and Virginia, consisting of the twin cities of Bristol, Tennessee/Bristol, Virginia, Kingsport, and Johnson City
- The Research Triangle in North Carolina, consisting of Raleigh, Durham, and Chapel Hill.
- The Golden Triangle in Texas, consisting of Beaumont, Port Arthur, and Orange.
- The Piedmont Triad in North Carolina, consisting of Greensboro, Winston-Salem (itself a merged city), and High Point.
- The Tri-Cities (Michigan) in Michigan, consisting of Bay City, Saginaw, and Midland in the Saginaw Valley
- In Illinois and Iowa: three of the four Quad Cities—Moline and Rock Island in Illinois and Davenport in Iowa—were formerly known as the Tri-Cities, before the inclusion of East Moline, Illinois and later, Bettendorf, Iowa
- The Capital District in New York, consisting of Albany, Schenectady, and Troy
- In Colorado: the towns of Firestone, Frederick, and Dacono (known as the "tri-towns")
- In Nebraska: Grand Island, Kearney, and Hastings in the south-central part of the state
- Tri-Cities, Virginia, consisting of Petersburg, Colonial Heights, and Hopewell in the Greater Richmond Region
- In New Hampshire: Dover, Somersworth, and Rochester in the Seacoast Region
- In Florida: the Tampa Bay Area, consisting of Tampa, Clearwater, and St. Petersburg
- In Oklahoma: Tuttle, Newcastle, and Blanchard (sometimes with the town of Bridge Creek)
- In California: Santa Barbara, Goleta, and Carpinteria, sometimes referred collectively as the South Coast, being on the a south-facing coast in Santa Barbara County. The term 'tri-cities' is only rarely used as a reference to them, and is considered somewhat old. Also in California, Oceanside, Vista, and Carlsbad are sometimes referred to as tri-cities.
- The Triple Cities in New York: Binghamton, Endicott and Johnson City
- In Pennsylvania: Allentown, Bethlehem, and Easton
[edit] Canada - Tri-Cities (British Columbia), consisting of Coquitlam, Port Coquitlam, and Port Moody, located in the north-eastern section of Metro Vancouver.
- Penetanguishene, Victoria Harbour, Midland, and Port McNicoll, Ontario.[citation needed]
- Ingersoll, Tillsonburg and Woodstock, Ontario.
- Kitchener, Waterloo and Cambridge, Ontario.
- Tri-Towns, a historic designation for the towns of Haileybury, New Liskeard and Cobalt, which is no longer in widespread use since the amalgamation of Haileybury and New Liskeard into the city of Temiskaming Shores in 2004.
[edit] Mexico - Torreon, Coahuila, Gomez Palacio and Lerdo, Durango.
- Monterrey, Nuevo Leon. and San Nicolas de los Garza, Nuevo Leon.
- Monterrey, Nuevo Leon. and San Pedro Garza Garcia, Nuevo Leon.
- Monterrey, Nuevo Leon. and Guadalupe, Nuevo Leon.
- Monterrey, Nuevo Leon. and Escobedo, Nuevo Leon.
- Monterrey, Nuevo Leon. and Santa Catarina, Nuevo Leon.
- Saltillo, Coahuila. and Ramos Arizpe, Coahuila.
- Piedras Negras, Coahuila. and Eagle Pass, Texas.
- Cd. Acuna, Coahuila. and Del Rio, Texas.
[edit] South America [edit] Europe [edit] Quad Cities - Quad Cities of Davenport and Bettendorf, Iowa, and Rock Island and Moline, Illinois. It might also include a fifth member, East Moline, Illinois.
- The Florence-Muscle Shoals Metropolitan Area in Alabama is locally referred to as "the Quad Cities", with Florence, Muscle Shoals, Sheffield, and Tuscumbia. Formerly, when Muscle Shoals was a mere village, this region was known a "Tri-Cities", Alabama. Actually, they are all incorporated as towns except for Florence.
- The Quad Cities of Minnesota consist of Virginia, Eveleth, Gilbert, and Mountain Iron.
- Pattaya-Chonburi Metropolitan Area consists of the City of Pattaya, Town of Chonburi, Portal town of Laem Chabang and Town of Sattahip on the west coast of Chonburi Province, Thailand
[edit] Examples of cities formed by amalgamation - London grew from its cores in the City of London and the City of Westminster to encompass many other towns and villages.
- Budapest is the amalgamation of Buda, Pest and Óbuda.
- Minneapolis. St. Anthony (not to be confused with St. Anthony Village, a modern city which is a suburb of Minneapolis) was a twin city to Minneapolis in the two cities' youth. Minneapolis, the larger of the two, annexed St. Anthony in the late 1800s.
- New York City (five boroughs, historically especially between Manhattan and Brooklyn)
- Hong Kong (Victoria City and Kowloon)
- Toronto, Ontario, formed by an amalgamation of the old City of Toronto with East York, Etobicoke, North York, Scarborough and York - which were themselves products of earlier amalgamations.
- Thunder Bay, Ontario (Fort William and Port Arthur).
- Lloydminster, Canada, on the Saskatchewan-Alberta border, was formed as a single entity in 1903, when both future provinces were part of the Northwest Territories, but was divided into two separate entities in 1905 because the border between the newly created provinces bisected the community. In 1930, the two towns were reunited as a single town under the shared jurisdiction of both provinces, and Lloydminster was reincorporated as a single city in 1958.
- Halifax and Dartmouth (Canada) were forcibly merged in 1996 along with Bedford and Halifax County to create the Halifax Regional Municipality.
- Berlin (Berlin and Cölln) in Germany
- Cleveland (Cleveland and Ohio City) in Ohio
- Wuppertal (Barmen and Elberfeld) in North Rhine-Westphalia, Germany
- Townsville (Townsville and Thuringowa) in Queensland, Australia
- Saguenay, Quebec (Chicoutimi, Jonquière, et al.)
- What is now the city of Winston-Salem in North Carolina was once two separate towns called Winston and Salem.
- Pittsburgh annexed Allegheny City, which is now the quarter of the city that lies north of the Allegheny and Ohio rivers.
- Wuhan in China consists of the towns of Wuchang, Hankou, and Hanyang in Hubei Province
- Seattle annexed the neighboring towns of West Seattle and Ballard.
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