Lawrence County, Pennsylvania

Lawrence County
Location within the U.S. state of Pennsylvania
Pennsylvania's location within the U.S.
Coordinates: 40°59′N 80°20′W / 40.99°N 80.33°W / 40.99; -80.33
Country United States
State Pennsylvania
FoundedMarch 20, 1849
Named afterUSS Lawrence
SeatNew Castle
Largest cityNew Castle
Area
  Total
363 sq mi (940 km2)
  Land358 sq mi (930 km2)
  Water4.5 sq mi (12 km2)  1.3%
Population
 (2020)
  Total
86,070
  Density240/sq mi (90/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district16th
Websitelawrencecountypa.gov

Lawrence County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 86,070. The county seat and largest city is New Castle.

The county was created on March 20, 1849, from parts of Beaver and Mercer counties. The county is part of the Greater Pittsburgh region of the commonwealth.