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Warren County, Pennsylvania
Map of Pennsylvania highlighting Warren County
Location in the state of Pennsylvania
Map of the U.S. highlighting Pennsylvania
Pennsylvania's location in the U.S.
Founded March 12, 1800
Seat Warren
Largest city Warren
 - Total
 - Land
 - Water

898 sq mi (2,325 km²)
883 sq mi (2,288 km²)
14 sq mi (37 km²), 1.60%
 - (2010)
 - Density

50/sq mi (18.2/km²)

Warren County is a county located in the U.S. state of Pennsylvania. As of 2010, the population was 41,815. It 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. Its county seat is Warren[1].


According to the U.S. Census Bureau, the county has a total area of 898 square miles (2,325 km²), of which 883 square miles (2,288 km²) is land and 14 square miles (37 km²) (1.60%) is water. Notable physical features include the Allegheny River, the Allegheny Reservoir, the Kinzua Dam, and the Allegheny National Forest.

Adjacent counties[]

Warren County is one of only eight counties statewide that border or touch up to eight counties.

National protected area[]

  • Allegheny National Forest (part)
  • Allegheny National Recreation Area (part)


Historical populations
Census Pop.
1800 233
1810 827 254.9%
1820 1,976 138.9%
1830 4,697 137.7%
1840 9,278 97.5%
1850 13,671 47.3%
1860 19,190 40.4%
1870 23,897 24.5%
1880 27,981 17.1%
1890 37,585 34.3%
1900 38,946 3.6%
1910 39,573 1.6%
1920 40,024 1.1%
1930 41,453 3.6%
1940 42,789 3.2%
1950 42,698 −0.2%
1960 45,582 6.8%
1970 47,682 4.6%
1980 47,449 −0.5%
1990 45,050 −5.1%
2000 43,863 −2.6%
2010 41,815 −4.7%

As of the census[4] of 2000, there were 43,863 people, 17,696 households, and 12,121 families residing in the county. The population density was 50 people per square mile (19/km²). There were 23,058 housing units at an average density of 26 per square mile (10/km²). The racial makeup of the county was 98.68% White, 0.21% Black or African American, 0.19% Native American, 0.27% Asian, 0.02% Pacific Islander, 0.12% from other races, and 0.52% from two or more races. 0.34% of the population were Hispanic or Latino of any race. 22.2% were of German, 12.4% Swedish, 11.2% American, 10.5% Irish, 8.8% English, 8.2% Italian and 5.1% Polish ancestry according to Census 2000.

There were 17,696 households out of which 29.80% had children under the age of 18 living with them, 56.10% were married couples living together, 8.40% had a female householder with no husband present, and 31.50% were non-families. 27.20% of all households were made up of individuals and 12.20% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.93.

In the county, the population was spread out with 24.10% under the age of 18, 6.40% from 18 to 24, 27.00% from 25 to 44, 25.90% from 45 to 64, and 16.70% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 96.20 males. For every 100 females age 18 and over, there were 92.80 males.


Map of Warren County, Pennsylvania with Municipal Labels showing Cities and Boroughs (red), Townships (white), and Census-designated places (blue).

Under Pennsylvania law, there are four types of incorporated municipalities: cities, boroughs, townships, and, in at most two cases, towns. The following cities, boroughs and townships are located in Warren County:



  • Bear Lake
  • Clarendon
  • Sugar Grove
  • Tidioute
  • Youngsville


  • Brokenstraw Township
  • Cherry Grove Township
  • Columbus Township
  • Conewango Township
  • Deerfield Township
  • Eldred Township
  • Elk Township
  • Farmington Township
  • Freehold Township
  • Glade Township
  • Limestone Township
  • Mead Township
  • Pine Grove Township
  • Pittsfield Township
  • Pleasant Township
  • Sheffield Township
  • Southwest Township
  • Spring Creek Township
  • Sugar Grove Township
  • Triumph Township
  • Watson Township

Census-designated places[]

Census-designated places are geographical areas designated by the U.S. Census Bureau for the purposes of compiling demographic data. They are not actual jurisdictions under Pennsylvania law.

Other communities[]

Some communities are neither incorporated nor treated as census-designated places.

Map of Warren County, Pennsylvania School Districts


Public School Districts[]

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


There is one Pennsylvania state park in Warren County. Chapman State Park is adjacent to Allegheny National Forest and State Game Land 29 just of U.S. Route 6, near Clarendon. Warren County also contains a tract of old-growth forest called Hearts Content National Scenic Area.

See also[]

  • Hickory Creek Wilderness
  • List of municipal authorities in Warren County, Pennsylvania
  • National Register of Historic Places listings in Warren County, Pennsylvania

Coordinates: 41°49′N 79°16′W / 41.81, -79.27


This page uses content from the English language Wikipedia. The original content was at Warren County, Pennsylvania. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.