Property Tax in Middlesex County, New Jersey
In Middlesex County, New Jersey, the typical homeowner pays $9,684 a year in property taxes on a home worth a median of $439,300. The figures on this page are the Census Bureau's published medians (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023), shown exactly as released.
What the Middlesex County numbers mean
A median is the middle household: half of owner-occupied households in Middlesex County pay more than $9,684, and half pay less. Your own bill is set by your home's assessed value, the exemptions you qualify for, and the local taxing districts your property sits in — so individual bills vary widely around the median.
Dividing the median tax by the median home value gives a derived effective rate of 2.20% for Middlesex County. It is an estimate built from two survey medians, not the county's official rate, but it is a fair way to compare the local tax burden with other counties where home values are very different.
Middlesex County by the numbers
| Measure | Middlesex County | New Jersey | United States |
|---|---|---|---|
| Median real estate taxes paid | $9,684 | $9,541 | $2,969 |
| Median home value | $439,300 | $427,600 | $303,400 |
| Derived effective rate* | 2.20% | 2.23% | 0.98% |
| Median tax per month | $807 | $795 | $247 |
*Estimate derived from Census medians (tax ÷ value), not an official rate.
Middlesex County at a glance
- Median tax rank in New Jersey: #9 of 21 counties
- Median home value rank in New Jersey: #10 of 21
- Population rank in New Jersey: #2 of 21 (861,535 residents)
- Population density rank: #5 of 21 (2,786 people per square mile)
- Land area rank in New Jersey: #12 of 21 (309 sq mi, 4.2% of the combined county land area)
- Median tax as a monthly figure: $807; per $1,000 of home value: $2.20
How Middlesex County compares
Of the 21 New Jersey counties with published data, 8 have a higher median property tax bill than Middlesex County's $9,684, putting the county at #9 in the state. Its bill is about the same as the state median of $9,541 and about 226% higher than the national median of $2,969.
Rates and values pull in opposite directions: an expensive housing market can produce big bills at ordinary rates. Here the derived rate is 2.20%, versus 0.98% derived nationally, and the median home value ranks #10 within New Jersey.
Some extra context for Middlesex County: the median bill works out to about $807 a month, and the derived rate equals roughly $2,204 of tax per $100,000 of home value. The county is home to 861,535 people — the #2 most populous county in New Jersey, spread over 309 square miles, a density of about 2,786 people per square mile. Its median home value, $439,300, ranks #10 among the state's 21 counties with data.
Nationally, Middlesex County's median bill of $9,684 ranks #18 of 3133 counties with published data — inside the top 1% of counties by tax paid. The county accounts for about 9.3% of New Jersey's population, its median home value is about 3% above the state median, and at the derived rate the median home would hand over roughly 22.04% of its value in tax across a decade. Within the state, the distance from Middlesex County to the most expensive county, Bergen County ($10,001), is $317 a year.
Counties nearest Middlesex County in the New Jersey ranking
| County | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|
| Somerset County, NJ | $10,001 | $523,900 | 1.91% |
| Union County, NJ | $10,001 | $488,800 | 2.05% |
| Hudson County, NJ | $9,413 | $508,600 | 1.85% |
| Mercer County, NJ | $8,804 | $351,000 | 2.51% |
How the tax is worked out
The bill is built in stages. First the assessor puts a market value on the property. Exemptions — a homestead exemption above all — then reduce the taxable amount. Finally the combined local rate is applied. To see the scale: at the county's derived rate of 2.20%, each $100,000 of value corresponds to about $2,204 of tax a year, and a $400,000 home to roughly $8,816. Real bills use the official assessment and district rates, not this derived figure, so treat the example as a sense of scale only.
Checking your assessment in Middlesex County
If your bill looks wrong, work through these steps:
1. Get your property record card from the assessor and check the basics — living area, lot size, bedrooms, condition, and any exemptions you should have.
2. Compare your assessed value with recent sale prices of similar homes in Middlesex County.
3. Talk to the assessor's office informally first; clear errors are often fixed without a hearing.
4. If needed, file a formal appeal with the local review board before the deadline on your assessment notice, with your evidence attached.
5. Keep paying the bill as issued while the appeal runs, unless your notice says otherwise — unpaid taxes accrue penalties regardless of an appeal.
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Frequently asked questions
What is the median property tax in Middlesex County, New Jersey?
The median real estate tax paid in Middlesex County, New Jersey is $9,684 per year, on a median home value of $439,300 (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
What is the effective property tax rate in Middlesex County, New Jersey?
On a derived basis, 2.20%: the county's median tax bill of $9,684 divided by its median home value of $439,300. Because it is calculated from two survey medians, read it as a comparison estimate rather than an official rate.
How does Middlesex County compare with the rest of New Jersey?
Middlesex County ranks #9 of 21 New Jersey counties with published data by median taxes paid. Its median bill of $9,684 is about the same as the New Jersey median of $9,541.
How are property taxes calculated in Middlesex County, New Jersey?
The assessor estimates your property's market value; exemptions (such as a homestead exemption) reduce the taxable amount; and the result is multiplied by the combined rates of the local taxing districts — county, municipality, school district and any special districts. In Middlesex County, the median outcome of that process is a bill of $9,684 on a median home value of $439,300.
Can I appeal my property tax assessment in Middlesex County, New Jersey?
You can. Pull your property record card from the Middlesex County assessor, verify its details, and compare the assessed value against similar homes that sold recently. If the value still seems too high, submit a formal appeal to the board named on your notice before the stated deadline — usually a 30-to-90-day window.