Mercer County is the name of several counties in the United States:
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Mercer County, New Jersey
Mercer County is a county located in the U.S. state of New Jersey. Its county seat is Trenton, also the state capital, but also directly borders the Philadelphia metropolitan area and is included within the Federal Communications Commission's ...
, the most populous U.S. county named Mercer and home to New Jersey's capital city, Trenton
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Mercer County, Illinois
Mercer County is a county in Illinois. According to the 2020 census, it had a population of 15,699. Its county seat is Aledo. Mercer County is included in the Davenport- Moline- Rock Island, IA-IL Metropolitan Statistical Area.
History
Mer ...
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Mercer County, Kentucky
Mercer County is a county located in the central part of the U.S. Commonwealth of Kentucky. As of the 2020 census, the population was 23,772. Its county seat is Harrodsburg. The county was formed from Lincoln County, Virginia in 1785 and i ...
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Mercer County, Missouri
Mercer County is a county located in the northwestern portion of the U.S. state of Missouri. As of the 2020 census, the population was 3,538, making it the second-least populous county in Missouri. Its county seat is Princeton. The county was ...
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Mercer County, North Dakota
Mercer County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 8,350. Its county seat is Stanton.
History
The Dakota Territory legislature enacted a January 8, 1873 law to create a county named Mercer ...
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Mercer County, Ohio
Mercer County is located in the U.S. state of Ohio. As of the 2020 United States census, 2020 census, the population was 42,528. Its county seat is Celina, Ohio, Celina. The county was created in 1820 and later organized in 1824. It is List o ...
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Mercer County, Pennsylvania
Mercer County is a County (United States), county in the Commonwealth (U.S. state), Commonwealth of Pennsylvania. As of the 2020 United States census, 2020 census, the population was 110,652. Its county seat is Mercer, Pennsylvania, Mercer, and ...
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Mercer County, Virginia Mercer County, Virginia has existed twice in the U.S. state of Virginia's history. Formed in 1785, and 1837, respectively, both counties were named for Revolutionary War General Hugh Mercer, who was killed at the Battle of Princeton in 1777, and e ...
, has existed twice; the two counties continue in existence with the same name in Kentucky and West Virginia
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Mercer County, West Virginia
Mercer County is a county in Southern West Virginia on the southeastern border of the U.S. state of West Virginia. At the 2020 census, the population was 59,664. Its county seat is Princeton. The county was originally established in the St ...
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