Map of US Counties

Jo Daviess County (/ˈdeɪvɪs/) is the northwesternmost county in the U.S. state of Illinois. According to the 2010 census, it had a population of 22,678. Its county seat is Galena. Jo Daviess County is part of the Tri-State Area and is located near Dubuque, Iowa and Platteville, Wisconsin. As part of the Driftless Area, Jo ... Read more

Marion County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 39,437. Its county seat is Salem. Marion County comprises the Centralia, IL Micropolitan Statistical Area, which is included in the St. Louis–St. Charles–Farmington, MO-IL Combined Statistical Area. Marion County overview: Name: Marion County ... Read more

Piatt County is a county in Illinois. According to the 2020 United States Census, it had a population of 16,673. Its county seat is Monticello. Piatt County is part of the Champaign–Urbana, IL Metropolitan Statistical Area. Piatt County overview: Name: Piatt County FIPS code: 17-147 State: Illinois Founded: 1841 Named for: James A. Piatt Seat: ... Read more

Tazewell County (/tæzwɛl/) is a county in the U.S. state of Illinois. According to the 2010 census, it had a population of 135,394. Its county seat and largest city is Pekin. It is pronounced with a short “a”, to rhyme with “razz” rather than “raze.” Tazewell County is part of the Peoria, IL Metropolitan Statistical ... Read more

Benton County is located in the northwest part of the U.S. state of Indiana, along the border with Illinois. As of 2010, the county’s population was 8,854. It contains six incorporated towns as well as several small unincorporated settlements; it is divided into 11 townships which provide local services. The county seat is Fowler. Benton ... Read more

Elkhart County is a county located in the U.S. state of Indiana. As of 2020, the county’s population was 207,047. The county seat is Goshen. Elkhart County is part of the Elkhart–Goshen Metropolitan Statistical Area, which in turn is part of the South Bend-Elkhart-Mishawaka Combined Statistical Area. It is also considered part of the broader ... Read more

Jackson County is a county located in the U.S. state of Indiana. As of 2010, the population was 42,376. The county seat is Brownstown. Jackson County overview: Name: Jackson County FIPS code: 18-071 State: Indiana Founded: Jan 1, 1816 Seat: Brownstown Largest city: Seymour Total Area: 513.91 sq mi (1,331.0 km²) Land Area: 509.31 sq mi (1,319.1 km²) Population Density: 83/sq mi ... Read more

Martin County is a county in the U.S. state of Indiana. As of the 2020 United States Census, the population was 10,327. The county seat is Shoals at the center of the county, and the county’s only incorporated city is Loogootee, on the county’s western border. Martin County overview: Name: Martin County FIPS code: 18-101 ... Read more

Putnam County is a county located in the U.S. state of Indiana. As of the 2010 United States Census, the population was 37,963. The county seat is Greencastle. The county was named for Israel Putnam, a hero in the French and Indian War and a general in the American Revolutionary War. The county was created ... Read more

Vermillion County lies in the western part of the U.S. state of Indiana between the Illinois border and the Wabash River. As of the 2010 census, the population was 16,212. The county seat is Newport. It was officially established in 1824 and was the fiftieth Indiana county created. Vermillion County is included in the Terre ... Read more

Black Hawk County is a county in the northeastern part of U.S. state of Iowa. As of the 2020 census, the population was 131,144, making it Iowa’s fifth-most populous county. The county seat is Waterloo. Black Hawk County is part of the Waterloo-Cedar Falls, IA Metropolitan Statistical Area. Black Hawk County overview: Name: Black Hawk ... Read more

Clinton County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 46,460. Its county seat is Clinton. Its name is in honor of the seventh Governor of New York State, DeWitt Clinton. Clinton County comprises the Clinton, IA Micropolitan Statistical Area, which is also included in ... Read more