Non emergency police phone numbers for 3 agencies in Mercer County, New Jersey, with which area each one covers and the official source used to check every number.
These are non emergency lines. If someone is in danger or a crime is in progress, call 911.
Mercer County agencies at a glance
| Agency, number and address | Type | Official website |
|---|---|---|
| Ewing Township Police Department (609) 882-1313 | Municipal police | ewingpolice.com Checked Aug 2026 |
| Hamilton Township Police Department (609) 581-4000 1270 Whitehorse Avenue, Hamilton, NJ 08610 | Municipal police | hamiltontwpnj.gov Checked Aug 2026 |
| Lawrence Township Police Department (609) 896-1111 2211 Lawrenceville Road, Lawrence Township, NJ 08648 | Municipal police | lawrencetwp.com Checked Aug 2026 |
Who covers which part of Mercer County
Every address in Mercer County belongs to a municipality (New Jersey has no unincorporated land), and each municipality is covered by its own police department or, in a few rural townships, by the New Jersey State Police. In most New Jersey counties the sheriff’s office mainly serves the courts and the county jail, so local incidents go to the town police. The departments in the table answer only for their own town (Ewing Township Police Department, Hamilton Township Police Department, Lawrence Township Police Department); for any other town, call that town’s police. Mercer County has about 381,671 residents on 224 square miles of land; about 158,164 of them (41%) live in the 3 towns with their own police departments listed here (Hamilton Township 91,640, Ewing Township 34,753, Lawrence Township 31,771) (U.S. Census Bureau, 2023 population estimate).
How far apart they are
The agencies on this page are up to 8 miles apart. If you live near a city line, check which side your address is on before calling: each department only handles its own area.
- Ewing Township Police Department: the nearest other agency listed here is Lawrence Township Police Department, 3.9 miles away.
- Hamilton Township Police Department: the nearest other agency listed here is Lawrence Township Police Department, 5.1 miles away.
- Lawrence Township Police Department: the nearest other agency listed here is Ewing Township Police Department, 3.9 miles away.
Neighbouring counties we cover
- Burlington County (7 agencies, about 17 miles away)
- Middlesex County (5 agencies, about 27 miles away)
- Monmouth County (3 agencies, about 29 miles away)
- Camden County (3 agencies, about 30 miles away)
- Ocean County (2 agencies, about 32 miles away)
How these numbers were checked
Each number was compared with the one published by an official source: the agency’s own site, its city or county government, or a state agency (ewingpolice.com, hamiltonnj.com, lawrencetwp.com). Last check: 3 in Aug 2026. Read how we verify numbers.
More of New Jersey
Mercer County is one of several we cover in New Jersey. See all non emergency police numbers in New Jersey, or tell us if a municipality in this county is missing.