Mercer County property tax rates, 2025

12 municipalities, ranked from lowest to highest effective rate. The median in Mercer County is 2.398 per $100.

Lowest general rate
2.733Princeton
Highest general rate
5.890Trenton City
Municipalities
122025
1 Princeton 2.733 1.814+0.070
2 West Windsor Township 3.162 2.080+0.097
3 East Windsor Township 3.627 2.341+0.031
4 Hopewell Township 3.129 2.343+0.088
5 Robbinsville Township 3.488 2.345+0.146
6 Lawrence Township 3.165 2.376+0.067
7 Pennington Borough 3.308 2.420+0.107
8 Hamilton Township 3.708 2.434+0.184
9 Hopewell Borough 3.498 2.545+0.129
10 Ewing Township 4.051 2.690+0.118
11 Hightstown Borough 5.109 3.028+0.206
12 Trenton City 5.890 3.468+0.089

Rates are per $100 of assessed value. Rank 1 has the lowest effective rate in the county.

Source: New Jersey Division of Taxation, 2025 General Tax Rates by County and Municipality. Retrieved 2026-10-24.

Property tax in Mercer County

In 2025, the general tax rate in Mercer County ranges from 2.733 in Princeton to 5.890 in Trenton City, per $100 of assessed value. On an assessed value of $300,000, that's $8,199 to $17,670 a year before exemptions. Because assessments sit at different shares of market value from place to place, compare places with the effective rate, which is what the ranking above uses.

Choose a municipality above for its rate history and a bill calculator, or read the New Jersey property tax guide for how assessments, due dates and appeals work.