Plainfield Township, Pennsylvania

Plainfield Township
Bushkill Creek in Plainfield Township in October 2010
Location of Plainfield Township in Northampton County, Pennsylvania
Location of Pennsylvania in the United States
Coordinates: 40°50′00″N 75°15′59″W / 40.83333°N 75.26639°W / 40.83333; -75.26639
Country United States
State Pennsylvania
CountyNorthampton
Area
 • Township
24.98 sq mi (64.69 km2)
 • Land24.75 sq mi (64.11 km2)
 • Water0.22 sq mi (0.58 km2)
Elevation
568 ft (173 m)
Population
 (2010)
 • Township
6,138
 • Estimate 
(2016)
6,153
 • Density248.6/sq mi (95.97/km2)
 • Metro
865,310 (US: 68th)
Time zoneUTC-5 (EST)
 • Summer (DST)UTC-4 (EDT)
Area code610
FIPS code42-095-61088
Primary airportLehigh Valley International Airport
Major hospitalLehigh Valley Hospital–Cedar Crest
School districtPen Argyl Area
Websiteplainfieldtownship.org

Plainfield Township is a township in Northampton County, Pennsylvania, United States. The population of Plainfield Township was 6,138 at the 2010 census. The township is part of the Lehigh Valley metropolitan area, which had a population of 861,899 and was the 68th-most populous metropolitan area in the U.S. as of the 2020 census.