Mercer County, New Jersey
Mercer County profile, demographic data, and geographic information.
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 392,138 (2024)
ID: 170103
|
County | Official County Government |
Contact: SR BUDGET EXAMINER
PO BOX 8068, TRENTON NJ 08650-0068
|
|
GUS Population: 93,911 (2024)
ID: 184026
|
Township | Municipal Government Within County |
Contact: BUSINESS ADMINISTRATOR
2090 GREENWOOD AVE, HAMILTON NJ 08609-2312
|
|
GUS Population: 91,193 (2024)
ID: 109096
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK
319 E STATE ST, TRENTON NJ 08608-1809
|
|
GUS Population: 35,858 (2024)
ID: 184022
|
Township | Municipal Government Within County |
Contact: MAYOR
2 JAKE GARZIO DR, EWING NJ 08628-1544
|
|
GUS Population: 32,388 (2024)
ID: 211232
|
Township | Municipal Government Within County |
Contact: MUNICIPAL MANAGER, CFO
2207 LAWRENCE RD, LAWRENCEVILLE NJ 08648-3164
|
|
GUS Population: 32,241 (2024)
ID: 170308
|
Township | Municipal Government Within County |
Contact: MAYOR
PO BOX 38, WEST WINDSOR NJ 08550-0038
|
|
MUNICIPALITY OF PRINCETON
GUS Population: 31,445 (2024)
ID: 170189
|
Municipal | Municipal Government Within County |
Contact: MAYOR
400 WITHERSPOON STREET, PRINCETON NJ 08540
|
|
GUS Population: 30,436 (2024)
ID: 170305
|
Township | Municipal Government Within County |
Contact: MUNICIPAL CLERK
16 LANNING BLVD, EAST WINDSOR NJ 08520-1925
|
|
GUS Population: 17,916 (2024)
ID: 170306
|
Township | Municipal Government Within County |
Contact: MAYOR
201 WASHINGTON CROSSING PE RD, TITUSVILLE NJ 08560-1410
|
|
GUS Population: 15,928 (2024)
ID: 193749
|
Township | Municipal Government Within County |
Contact: MAYOR
1 WASHINGTON BLVD, STE 6, ROBBINSVILLE NJ 08691-3162
|
|
GUS Population: 5,978 (2024)
ID: 170187
|
Municipal | Municipal Government Within County |
Contact: BUSINESS ADMINISTRATOR
156 BANK STREET, HIGHTSTOWN NJ 08520
|
|
GUS Population: 2,906 (2024)
ID: 170188
|
Municipal | Municipal Government Within County |
Contact: MAYOR ATT:BETTY STERLING
30 NORTH MAIN STREET, PENNINGTON NJ 08534
|
|
BOROUGH OF HOPEWELL
GUS Population: 1,938 (2024)
ID: 130842
|
Municipal | Municipal Government Within County |
Contact: MAYOR
88 E BROAD ST, HOPEWELL NJ 08525-1820
|