United States

Montana

List of Counties in Montana The state of Montana has a total of 56 counties. Beaverhead County is the oldest (founded in 1864) while Petroleum County is the youngest (established in 1926). Yellowstone County is the most populous, with a population of 155,634. Beaverhead County has the most land area (14,356 km2), while Silver Bow …

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Missouri

List of Counties in Missouri The state of Missouri has 114 counties in total. Cape Girardeau County is the oldest (founded in 1812), while Saint Louis City is the newest (established in 1876). Saint Louis County is the most populous, with a population of 1,000,438 people. Texas County has the largest land area (3,054 km2), …

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Mississippi

List of Counties in Mississippi The state of Mississippi has 81 counties in total. Adams County is the oldest (founded in 1799), while Humphreys County is the youngest (established in 1918). Hinds County is the most populous, with a population of 245,285. Yazoo County has the most land area (1823 km2), while Alcorn County has …

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Minnesota

List of Counties in Minnesota The state of Minnesota has 87 counties in total. Benton County is the oldest (founded in 1849), while Lake of the Woods County is the youngest (established in 1923). Hennepin County is the most populous, with a population of 1,152,425 people. Saint Louis County has the largest land area (16,123 …

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Michigan

List of Counties in Michigan The state of Michigan has a total of 83 counties. Wayne County is the oldest (founded in 1815), while Dickinson County is the youngest (established in 1891). Wayne County is the most populous, with a population of 1,820,584. Keweenaw County (15,452 km2) has the largest land area, while Cass County …

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Massachusetts

List of Counties in Massachusetts The state of Massachusetts is divided into 14 counties. Essex County is the oldest (founded in 1643), while Hampden County is the newest (established in 1812). Middlesex County is the most populous, with a population of 1,503,085. Worcester County has the most land area (3,919 km2), while Nantucket County has …

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Maryland

List of Counties in Maryland The state of Maryland is divided into 23 counties. Saint Mary’s County is the oldest (founded in 1637), while Garrett County is the youngest (established in 1872). Montgomery County is the most populous, with a population of 1,004,709 people. Worcester County (1,800 km2) has the largest land area, whereas Baltimore …

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Maine

List of Counties in Maine The state of Maine is divided into 16 counties. York County is the oldest (formed in 1652), while Knox County is the youngest (established in 1860). Cumberland County is the most populous, with a population of 289,977 people. Aroostook County has the most land area (17,687 km2), while Sagadahoc County …

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Louisiana

List of Counties in Louisiana The state of Louisiana is divided into 64 counties. Ascension Parish is the oldest (founded in 1807), while Allen Parish is the youngest (established in 1912). East Baton Rouge Parish is the most populous, with a population of 440,171. Plaquemines Parish (6,291 km2) has the largest land area, while West …

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Kentucky

List of Counties in Kentucky The state of Kentucky has a total of 120 counties. Fayette County is the oldest (founded in 1780), while McCreary County is the youngest (established in 1912). Jefferson County has the most people, with 760,026, making it the most populous. Pike County has the most land area (2,041 km2), while …

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