List of Counties in Iowa The state of Iowa has a total of 99 counties. Des Moines County is the oldest (founded in 1834), while Humboldt County is the youngest (established in 1857). Polk County is the most populous, with a population of 430,640 people. Kossuth County (2,520 km2) has the largest land area, while …
List of Counties in Indiana The state of Indiana has 92 counties in total. Knox County is the oldest (founded in 1790), while Newton County is the youngest (established in 1859). Marion County is the most populous, with a population of 903,393. Allen County (1,702 km2) has the largest land area, while Ohio County has …
List of Counties in Illinois The state of Illinois has 102 counties in total. St. Clair County is the oldest (founded in 1790), while Douglas County is the youngest (established in 1859). Cook County is the most populous, with a population of 5,194,675. McLean County (3,067 km2) has the largest land area, while Putnam County …
List of Counties in Idaho The state of Idaho is divided into 44 counties. Owyhee County is the oldest (formed in 1863) while Caribou County is the youngest (established in 1919). Ada County is the most populous, with a population of 392,365 people. Idaho County has the most land area (21,976 km2), while Payette County …
List of Counties in Hawaii The state of Hawaii is divided into five counties. Honolulu County is the most populous, with a population of 953,207 people. Hawaii County has the largest land area (10,432 km2), while Kalawao County has the smallest (13 km2). Please find all Hawaiian counties listed alphabetically below. Hawaii County, HI Honolulu …
List of All Counties in Georgia The state of Georgia has a total of 162 counties. Burke County is the oldest (founded in 1777), while Peach County is the youngest (established in 1924). Fulton County is the most populous, with a population of 1,041,423. Ware County has the most land area (2,339 km2), while Clarke …
List of Counties in Florida The state of Florida is divided into 68 counties. Escambia County is the oldest (founded in 1821), while Gilchrist County is the youngest (established in 1925). Miami-Dade County is the most populous, with a population of 2,662,874. Palm Beach County (5,268 km2) has the largest land area, while Union County …
List of Counties in Delaware The state of Delaware is divided into three counties. New Castle County is the oldest (formed in 1664) while Kent County is the youngest (established in 1680). New Castle County is the most populous, with a population of 538,479 people. Sussex County has the most land area (3,098 km2), while …
List of Counties In Connecticut State The state of Connecticut is divided into eight counties. Fairfield County is the oldest (founded in 1666), while Middlesex County is the newest (established in 1785). Fairfield County is the most populous, with a population of 916,829 people. Litchfield County has the most land area (2,383 km2), while Middlesex …
List of Counties In Colorado State The state of Colorado has 62 counties in total. Arapahoe County is the oldest (formed in 1861), while Broomfield is the youngest (established in 2001). El Paso County is the most populous, with a population of 622,263. Las Animas County has the most land area (12,363 km2), and Broomfield …
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