Plainfield city, New Jersey
Official LSAD Designation: Plainfield city • Census GEOID: 3459190
• Union County
Plainfield city is an incorporated city in Union County, New Jersey. According to official records from the Census (2025), Plainfield city had an estimated population of 57,141 residents. Official Census Bureau geographic records classify this community under LSAD designation Plainfield city (GEOID 3459190).
Local Government Administration U.S. Census Bureau GMAF
City Of Plainfield
Municipal
Official Title:
Mayor
Address:
515 WATCHUNG AVE, PLAINFIELD NJ 07060-1798
County Of Union
County
Official Title:
Clerk Of The Board
Address:
10 ELIZABETHTOWN PLZ, ELIZABETH NJ 07207-3451
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 57,141 | 2025 |
| Median Household Income | $85,908 | 2020-2024 |
| Median Home Value | $410,800 | 2020-2024 |
| Land Area | 5.96 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).