Map of US Counties

Marin County /məˈrɪn/ (listen) (Spanish: Condado de Marín) is a county located in the northwestern part of the San Francisco Bay Area of the U.S. state of California. As of the 2020 census, the population was 262,231. Its county seat and largest city is San Rafael. Marin County is across the Golden Gate Bridge from ... Read more

San Diego County (/ˌsæn diˈeɪɡoʊ/ (listen)), officially the County of San Diego (Spanish: Condado de San Diego), is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California’s second-most populous county and the fifth-most populous in the United States. Its county ... Read more

Trinity County is a county located in the northwestern portion of the U.S. state of California. Trinity County is rugged, mountainous, heavily forested, and lies along the Trinity River (for which it is named) within the Salmon and Klamath Mountains. It is also one of three counties in California with no incorporated cities (the other ... Read more

Clear Creek County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 9,397. The county seat is Georgetown. Clear Creek County is part of the Denver metropolitan area. Clear Creek County overview: Name: Clear Creek County FIPS code: 08-019 State: Colorado Founded: November 1, 1861 Named ... Read more

Gunnison County overview: Name: Gunnison County FIPS code: 08-051 State: Colorado Founded: March 9, 1877 Named for: John W. Gunnison Seat: Gunnison Largest city: Gunnison Total Area: 3,260 sq mi (8,400 km²) Land Area: 3,239 sq mi (8,390 km²) Total Population: 17,281 Population Density: 5.2/sq mi (2.0/km²) Time zone: UTC−7 (Mountain) Summer Time Zone (DST): UTC−6 (MDT) Website: www.gunnisoncounty.org Gunnison County location ... Read more

Montezuma County overview: Name: Montezuma County FIPS code: 08-083 State: Colorado Founded: April 16, 1889 Named for: Moctezuma II Seat: Cortez Largest city: Cortez Total Area: 2,040 sq mi (5,300 km²) Land Area: 2,030 sq mi (5,300 km²) Total Population: 26,175 Population Density: 13/sq mi (5/km²) Time zone: UTC−7 (Mountain) Summer Time Zone (DST): UTC−6 (MDT) Website: montezumacounty.org Montezuma County location map. ... Read more

Sedgwick County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 2,404. The county seat is Julesburg. The county was named for Fort Sedgwick, a military post along the Platte Trail, which was named for General John Sedgwick. It is located near the state border with ... Read more

Sussex County is located in the southern part of the U.S. state of Delaware, on the Delmarva Peninsula. As of the 2020 census, the population was 237,378. The county seat is Georgetown. The first European settlement in the state of Delaware was founded by the Dutch in 1631 near the present-day town of Lewes on ... Read more

Duval County is in the northeastern part of the U.S. state of Florida. As of the 2020 census, the population was 995,567, up from 864,263 in 2010. Its county seat is Jacksonville, with which the Duval County government has been consolidated since 1968. Duval County was established in 1822, and is named for William Pope ... Read more

Jackson County is a county located in the U.S. state of Florida, on its northwestern border with Alabama. As of the 2020 census, the population was 47,319. Its county seat is Marianna. Jackson County overview: Name: Jackson County FIPS code: 12-063 State: Florida Founded: August 12, 1822 Named for: Andrew Jackson Seat: Marianna Largest city: ... Read more

Okeechobee County (US: /oʊkiˈtʃoʊbi/) is a county located in the Florida Heartland region of the state of Florida. As of the 2020 census, the population was 39,644. The county seat is Okeechobee. The County of Okeechobee comprises the Okeechobee, FL Micropolitan Statistical Area, which is included in the Miami–Fort Lauderdale–Port St. Lucie, FL Combined Statistical ... Read more

Union County is a county located in the north central portion of the U.S. state of Florida, the smallest in the state by area. As of the 2020 census, the population was 16,147. The county seat is Lake Butler. With a personal per capita income of $20,396 (as of 2017), it is the fourth-poorest county ... Read more