According to the U.S. Census Bureau, the county has a total area of 899 square miles (2,330 km), of which 884 square miles (2,290 km) is land and 14 square miles (36 km) (1.6%) is water. Notable physical features include the Allegheny River, Allegheny Reservoir, Kinzua Dam, and the Allegheny National Forest. The county has a warm summer humid continental climate (Dfb), and the average temperature in Warren ranges from 24.5°F in January to 69.3°F in July.


According to the 2000 census, there were 43,863 people, 17,696 households, and 12,121 families living in the county. The population density was 50 people per square mile (19/km). There were 23,058 housing units at an average density of 26 per square mile (10/km). The racial composition 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 was Hispanic or Latino of any race. 22.2% were German, 12.4% Swedish, 11.2% American, 10.5% Irish, 8.8% English, 8.2% Italian, and 5.1% of Polish origin.

There were 17,696 households, of which 29.80% had children under age 18 living with them, 56.10% were married couples living together, 8.40% lived in a household without a husband. present, and 31.50% had no family. 27.20% of all households were made up of individuals, and 12.20% of these were single people 65 years of age or older. The average household size was 2.42 and the average family size was 2.93.

The population in the county was dispersed: 24.10% were under the age of 18, 6.40% were 18 to 24, 27.00% were 25 to 44, 25.90% were 45 to 64, and 16.70% were 65 and older. The median age was 40 years old. There were 96.20 men for every 100 women. There were 92.80 men for every 100 women age 18 and older.

The county’s poverty demographics.

According to the study, which is the Pennsylvania General Assembly Legislature, the poverty rate in Warren County was 14.1 percent in 2014. The statewide poverty rate was 13.6% in 2014. The child poverty rate by school district in 2012 was: the Warren County School District at 46.1%, living at or below the federal poverty level of 185%, and the Titusville Area School District at 57.9%. Data on child poverty rates are collected by school districts as part of the federal free school lunch program.

Birth rate.

The birth rate in Warren County was 566 births in 1990. The county’s live birth rate dropped to 494 births in 2000 and dropped even further to 392 births in 2011. From 1960 to 2010, rural Pennsylvania saw a steady decline in the number of residents under the age of 18.