Quick answer. Middlesex County's 25 municipalities had 2025 effective tax rates from 1.454 in Cranbury Township to 2.802 in Highland Park Borough, and average residential bills from $7,101 (New Brunswick City) to $13,819 (Metuchen Borough). Figures are from the New Jersey Division of Taxation's own tables.
Towns
25Median effective rate
2.098Median town's average bill
$9,597Highest general rate
12.177East Brunswick Township
Middlesex County property tax rates by town, 2025
Select a column heading to sort. Select a town to open the calculator with it chosen.
| Carteret Borough | 1.568 | 1.760 | $8,196 |
| Cranbury Township | 1.836 | 1.454 | $11,281 |
| Dunellen Borough | 2.448 | 2.399 | $11,300 |
| East Brunswick Township | 12.177 | 2.287 | $11,653 |
| Edison Township | 5.725 | 2.005 | $10,585 |
| Helmetta Borough | 3.558 | 2.054 | $7,441 |
| Highland Park Borough | 2.723 | 2.802 | $13,112 |
| Jamesburg Borough | 6.955 | 2.631 | $8,744 |
| Metuchen Borough | 7.255 | 2.374 | $13,819 |
| Middlesex Borough | 2.120 | 2.164 | $10,241 |
| Milltown Borough | 6.951 | 2.500 | $11,424 |
| Monroe Township | 2.740 | 1.557 | $9,229 |
| New Brunswick City | 2.688 | 2.092 | $7,101 |
| North Brunswick Township | 6.571 | 2.352 | $10,588 |
| Old Bridge Township | 6.094 | 1.836 | $9,590 |
| Perth Amboy City | 3.178 | 2.296 | $7,936 |
| Piscataway Township | 1.750 | 1.708 | $9,105 |
| Plainsboro Township | 2.766 | 2.294 | $12,635 |
| Sayreville Borough | 6.259 | 2.098 | $9,156 |
| South Amboy City | 3.217 | 2.056 | $8,859 |
| South Brunswick Township | 5.578 | 1.938 | $10,951 |
| South Plainfield Borough | 7.316 | 2.023 | $9,155 |
| South River Borough | 2.669 | 1.797 | $7,824 |
| Spotswood Borough | 3.792 | 2.276 | $9,828 |
| Woodbridge Township | 12.034 | 2.234 | $9,597 |
Sources: 2025 General Tax Rates (general and effective rates), Amended Table of Equalized Valuations 2025 (average ratio of assessed to true value), 2025 Average Residential Statistics (average bill). * Ratio amended by the Tax Court (marked ** in the table): Carteret Borough. On narrow screens the ratio column is hidden.
Reading the table
Use the general rate with your assessed value to estimate a bill: assessed value × general rate ÷ 100. The effective rate is the State's comparison figure, and the Division says it is not for computing a bill. The widest gap in Middlesex County is East Brunswick Township: general 12.177, effective 2.287, with assessments averaging 17.44% of true value. The average residential bill is the Division's average for residential properties in the town, not a typical bill for any one house.
Appeals in Middlesex County
Assessment appeals go to the Middlesex County Board of Taxation: County Administration Building, 75 Bayard Street, 4th Floor, New Brunswick, NJ 08901, phone (732) 745-3350 (State contact list, September 2026). The Division's appeals page gives the filing deadline as April 1, or May 1 when the town has had a revaluation or reassessment. To win, an owner must show the assessment doesn't fairly reflect true market value or falls outside the common level range: the town's average ratio plus or minus 15%. The ranges certified for tax year 2027 are in the Chapter 123 certification; it notes that ratios over 100% are considered 100%, which affects Carteret Borough here.
Where Middlesex County stands
The median Middlesex County town's effective rate, 2.098, is below the statewide median of 2.140 across all 564 municipalities. Highest effective rates in the county: Highland Park Borough (2.802), Jamesburg Borough (2.631), Milltown Borough (2.500). Lowest: Cranbury Township (1.454), Monroe Township (1.557), Piscataway Township (1.708). Highest average residential bills: Metuchen Borough ($13,819), Highland Park Borough ($13,112), Plainsboro Township ($12,635). Lowest: New Brunswick City ($7,101), Helmetta Borough ($7,441), South River Borough ($7,824).
To compare with another county, pick any town in the property tax calculator, which links all 21 county tables.
Sources
Opened and checked November 2026.
- NJ Division of Taxation: 2025 General Tax Rates by county and municipality (PDF)
- NJ Division of Taxation: Amended Table of Equalized Valuations 2025 (PDF)
- NJ Division of Taxation: 2025 Average Residential Statistics (PDF)
- NJ Division of Taxation: 2026 Average Ratios and Common Level Ranges for Tax Year 2027 (PDF)
- NJ Division of Taxation: Property tax statistical information
- NJ Division of Taxation: Property tax appeals
- NJ Division of Taxation: County Tax Administrators and County Assessor (September 2026, PDF)
A calculator built from the State's published tables, not tax or legal advice. MCC Solutions is not affiliated with the State of New Jersey, any county board of taxation or any municipality. Your bill may differ: exemptions, deductions, appeals, added or omitted assessments and the current year's rate all change it. Check your tax collector or your bill. The calculator runs in your browser, and nothing you enter is sent or saved.
Common questions
Which Middlesex County town had the highest property tax rate in 2025?
By effective rate, the State's figure for comparing towns, Highland Park Borough at 2.802. By general rate, the one applied to assessed values, East Brunswick Township at 12.177. The two lists differ because towns assess at different shares of market value.
Which Middlesex County town had the lowest?
Cranbury Township, with an effective rate of 1.454. The lowest general rate was Carteret Borough's 1.568.
What was the average residential property tax bill in Middlesex County towns?
It ranged from $7,101 in New Brunswick City to $13,819 in Metuchen Borough in 2025, according to the Division's Average Residential Statistics. The median town's average bill was $9,597.
Where do Middlesex County homeowners file a property tax appeal?
With the Middlesex County Board of Taxation, County Administration Building, 75 Bayard Street, 4th Floor, New Brunswick, NJ 08901, phone (732) 745-3350 (State contact list, September 2026). The filing deadline is April 1, or May 1 when the town has had a revaluation or reassessment. Owners of property assessed over $1,000,000 may file directly with the Tax Court.
How do I estimate my own tax in Middlesex County?
Multiply your assessed value by your town's general rate and divide by 100, or use the calculator, which has every Middlesex County town loaded. Your bill may differ because of exemptions, deductions, appeals and the newer year's rate.