Town guide
Mercer
Pennsylvania · PA · Butler County
About Mercer
Borough in Pennsylvania, US1803Established
1,982Population
1.1 sq miArea
Mercer is a borough in Mercer County, Pennsylvania, United States, and its county seat. The population was 1,982 at the 2020 census. It is part of the Hermitage micropolitan area. The community was named after Brigadier General Hugh Mercer. The Mercer County Court House and Christiana Lindsey House are listed on the National Register of Historic Places.
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