North Charleroi, Pennsylvania

North Charleroi
Looking southwest up the hill across much of the town from the south end of Olive Ave
Etymology: Charleroi, Belgium
Nickname: 
Lock 4
Location of North Charleroi in Washington County, Pennsylvania.
North Charleroi
Location of North Charleroi in Pennsylvania
Coordinates: 40°9′3″N 79°54′34″W / 40.15083°N 79.90944°W / 40.15083; -79.90944
CountryUnited States
StatePennsylvania
CountyWashington
Established1885
Government
  MayorSteve Hega
Area
  Total
0.29 sq mi (0.76 km2)
  Land0.26 sq mi (0.67 km2)
  Water0.04 sq mi (0.10 km2)
Population
 (2020)
  Total
1,303
  Density5,070.04/sq mi (1,957.45/km2)
Time zoneUTC-4 (EST)
  Summer (DST)UTC-5 (EDT)
ZIP code
15022
Area code724

North Charleroi is a borough in Washington County, Pennsylvania, United States. The population was 1,302 at the 2020 census.

The settlement is also known as "Lock 4". Previously Lock and Dam #4 was located on this side of the Monongahela River, and the place had this name. Lock and Dam #4 was later relocated further upstream on the other side of the "Charleroi Monessen Bridge". The name was changed but most residents still refer to the town as "Lock 4".