Pennsylvania Counties
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Pennsylvania Counties

There are sixty-seven counties of the Commonwealth of Pennsylvania in the United States of America. The city of Philadelphia is coterminous with Philadelphia County, and governmental functions have been consolidated since 1854.

Warren County, Pennsylvania

Warren County Education, Geography, and History

Warren County, Pennsylvania Courthouse

Warren County is a county located in the state of Pennsylvania. Based on the 2010 census, the population was 41,815. Its county seat is Warren. The county was formed in 1800 from parts of Allegheny and Lycoming counties; attached to Crawford County until 1805 and then to Venango County until Warren was formally organized in 1819.

Warren County makes up the Warren, PA Micropolitan Statistical Area.

Etymology - Origin of Warren County Name

Named for General Joseph Warren


County QuickFacts: CensusBureau Quick Facts

Warren County History

Created on March 12, 1800, from parts of Allegheny and Lycoming Counties and named for General Joseph Warren. It was attached to Crawford County until 1805 and then to Venango County until 1819 when it was formally organized. Warren, the county seat was laid out in 1795 and incorporated as a borough on April 3, 1832.

French explorers visited the area in 1739 and 1749. Pennsylvania acquired the land from Indian nations in 1784, in the "Last Purchase." "Mad Anthony" Wayne's campaign in the Old Northwest, in 1794, finally made it safe for settlers to stay in northwestern Pennsylvania. David Mead contested the ownership with the Holland Land Company until 1796. The acrimony raised by "actual settlers" suits against the powerful absentee land companies' titles slowed the growth of the area. The Cornplanter reservation land was acknowledged to belong to the Seneca Indians from 1791 until the Kinzua Dam was completed, in 1964. At first, lumber was abundant and was floated down many streams to where it could be sold. The rafting lumber business lasted from 1800 to 1900. Today, second and third growth trees are harvested and logging companies continue, managed under regulations. Agriculture and population developed slowly, but oil and gas have been profitable since the 1870s. The county was especially favored by railroad access. Warren welcomed the Erie Railroad in 1859, followed by branches of the Pennsylvania and the New York Central. Metal, concrete, and tobacco products prospered here in the past. Oil refining and lubricant manufacturing are still important activities, as is furniture making. In the five years from 1987 to 1992, the county's figure for value added (to the national economy) from manufacturing rose 86 percent Although 15 percent of land is in farms, meat and dairying are the areas in which agricultural receipts are competitive with other rural counties.

Geography: Land and Water

As reported by the Census Bureau, the county has a total area of 898 square miles (2,325 km2), of which, 883 square miles (2,288 km2) of it is land and 14 square miles (37 km2) of it (1.60%) is water.

Neighboring Counties

Bordering counties are as follows:

  • Chautauqua County, New York (north)
  • Cattaraugus County, New York (northeast)
  • McKean County (east)
  • Elk County (southeast)
  • Forest County (south)
  • Venango County (southwest)
  • Crawford County (west)
  • Erie County (west)


Public school districts

Corry Area School District
Titusville Area School District
Warren County School District (four high schools)

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