Norristown, Pennsylvania

Norristown, Pennsylvania
Main and Swede streets, May 2011
Location of Norristown in Montgomery County, Pennsylvania
Norristown
Location of Norristown in Pennsylvania
Norristown
Norristown (the United States)
Coordinates: 40°07′12″N 75°20′30″W / 40.12000°N 75.34167°W / 40.12000; -75.34167
CountryUnited States
StatePennsylvania
CountyMontgomery
Settled1682
Borough1812
Municipality1986
Government
 • TypeCouncil–manager
Area
 • Total
3.60 sq mi (9.33 km2)
 • Land3.51 sq mi (9.10 km2)
 • Water0.089 sq mi (0.23 km2)
Elevation
135 ft (41 m)
Population
 (2020)
 • Total
35,748
 • Density10,169.4/sq mi (3,926.44/km2)
DemonymNorristonians
Time zoneUTC-5 (EST)
 • Summer (DST)UTC-4 (EDT)
ZIP Codes
19401, 19403–19409, 19487–19489
Area codes610 and 484
FIPS code42-54656
Websitewww.norristown.org

Norristown is a borough with home rule status and the county seat of Montgomery County, Pennsylvania, United States, in the Philadelphia metropolitan area. Located along the Schuylkill River, approximately 6 miles (9.7 km) from Philadelphia, Norristown had a population of 35,748 as of the 2020 census. It is the fourth-most populous municipality in the county and second-most populous borough in Pennsylvania.

It is the largest non-township municipality in Montgomery County and is located 49.8 miles (80.1 km) southeast of Allentown and 19.9 miles (32.0 km) northwest of Philadelphia.