Map of US Counties

Cimarron County is the westernmost county in the U.S. state of Oklahoma. Its county seat is Boise City. As of the 2020 census, its population was 2,296, making it the least-populous county in Oklahoma; and indeed, throughout most of its history, it has had both the smallest population and the lowest population density of any ... Read more

Harmon County is a county in the southwest corner of the U.S. state of Oklahoma. As of the 2010 Census, the population was 2,922, making it the second-least populous county in Oklahoma, behind only Cimarron County. It has lost population in every census since 1930. The county seat is Hollis. Harmon County overview: Name: Harmon ... Read more

Marshall County is a county located on the south central border of Oklahoma. As of the 2010 census, the population was 15,840. Its county seat is Madill. The county was created at statehood in 1907 from the former Pickens County of the Chickasaw Nation. It was named to honor the maiden name of the mother ... Read more

Pittsburg County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 45,837. Its county seat is McAlester. The county was formed from part of the Choctaw Nation in Indian Territory in 1907. County leaders believed that its coal production compared favorably with Pittsburgh, Pennsylvania at the ... Read more

Woodward County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 20,081. Its county seat is Woodward. Woodward County comprises the Woodward, OK Micropolitan Statistical Area. Woodward County was originally known as “N” County and was composed of present-day Woodward County and portions of Harper, Ellis, ... Read more

Jefferson County is one of the 36 counties in the U.S. state of Oregon. At the 2020 census, the population was 24,502. The county seat is Madras. The county is named after Mount Jefferson. Jefferson County overview: Name: Jefferson County FIPS code: 41-031 State: Oregon Founded: December 12, 1914 Named for: Mount Jefferson Seat: Madras ... Read more

Wallowa County (/wəˈlaʊwə/) is the northeastern most county in the U.S. state of Oregon. As of the 2020 census, the population was 7,391, making it Oregon’s fifth-least populous county. Its county seat is Enterprise. According to Oregon Geographic Names, the origins of the county’s name are uncertain, with the most likely explanation being it is ... Read more

Cameron County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 4,547 and is Pennsylvania’s least populous county. Its county seat is Emporium. The county was created on March 29, 1860, from parts of Clinton, Elk, McKean, and Potter Counties. It is named for Senator Simon Cameron. Cameron ... Read more

Franklin County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 155,932 Its county seat is Chambersburg. Franklin County comprises the Chambersburg–Waynesboro, PA Metropolitan Statistical Area, which is also included in the Washington–Baltimore combined statistical area. It lies to a large extent within the Cumberland Valley. Franklin County ... Read more

Mifflin County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 46,143. Its county seat is Lewistown. The county was created on September 19, 1789, from parts of Cumberland County and Northumberland County. It was named for Thomas Mifflin, the first Governor of Pennsylvania. Mifflin County comprises the ... Read more

Union County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 42,681. Its county seat is Lewisburg. The county was created on March 22, 1813, from part of Northumberland County. Its name is an allusion to the federal Union. Mifflinburg was established by legislation as the first county ... Read more

Anderson County is a county located in the U.S. state of South Carolina. As of the 2020 census, its population was 203,718. Its county seat is Anderson. Named for Revolutionary War leader Robert Anderson, the county is located in northwestern South Carolina, along the state line of Georgia. Anderson County is included in the Greenville-Anderson-Mauldin, ... Read more