Butler County was formed in the year 1800. The name of the county derived from Richard Butler, a hero of the American Revolution. Located in the U.S state of Pennsylvania, the territory covers 795 sq mi of area. The area is populated with more than 0.17 million residents with an intermingling cohabitation of White, Native American, black or African American, Asian, Hispanic or Latino, Pacific Islander, and others along with 65K households and 46K family units residing in the county. Butler is the county seat and the largest city.

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