Property Tax in Warren County, New Jersey
Homeowners in Warren County, New Jersey pay a median of $8,156 a year in real estate taxes, on a median home value of $323,100. Those are the Census Bureau's published medians for the county (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023) — the typical bill and the typical home value for owner-occupied households.
What the Warren County numbers mean
Read the two medians together: $8,156 is the middle tax bill among owner-occupied households in Warren County, and $323,100 is the middle home value. Neither figure describes a specific property — together they describe the typical homeowner's situation in the county.
The derived effective rate for Warren County is 2.52% (median tax ÷ median value). Treat it as an estimate for comparison only: it comes from survey medians of different households, not from the county's rate schedule.
The key figures for Warren County
| Measure | Warren County |
|---|---|
| Median real estate taxes paid per year | $8,156 |
| Median home value | $323,100 |
| Derived effective rate* | 2.52% |
| Equivalent monthly tax | $680 |
| Tax per $100,000 of value (derived) | $2,524 |
| Illustrative tax on a $400,000 home (derived rate) | $10,096 |
For context, the New Jersey medians are $9,541 of tax on $427,600 of value, and the US medians are $2,969 on $303,400. *Derived figures are estimates from Census medians, not official rates.
Warren County at a glance
- Median tax rank in New Jersey: #13 of 21 counties
- Median home value rank in New Jersey: #16 of 21
- Population rank in New Jersey: #19 of 21 (110,238 residents)
- Population density rank: #18 of 21 (309 people per square mile)
- Land area rank in New Jersey: #9 of 21 (356 sq mi, 4.8% of the combined county land area)
- Median tax as a monthly figure: $680; per $1,000 of home value: $2.52
How Warren County compares
The median tax bill in Warren County is about 15% lower than the state median ($9,541 for New Jersey) and about 175% higher than the US median ($2,969 nationally). By median taxes paid, the county ranks #13 out of 21 New Jersey counties with published Census data — 12 counties in the state have a higher median bill.
Comparisons cut both ways: a county can have a modest rate but high bills because homes are expensive, or a high rate but modest bills because homes are cheaper. Warren County's derived rate of 2.52% sits above the derived US figure of 0.98%.
Some extra context for Warren County: the median bill works out to about $680 a month, and the derived rate equals roughly $2,524 of tax per $100,000 of home value. The county is home to 110,238 people — the #19 most populous county in New Jersey, spread over 356 square miles, a density of about 309 people per square mile. Its median home value, $323,100, ranks #16 among the state's 21 counties with data.
Zooming out: of 3133 counties nationwide with published Census figures, only 27 record a higher median tax bill than Warren County — it sits in the top 1% nationally. The county holds roughly 1.2% of New Jersey's people. Its homes are worth less than the state norm (median $323,100 versus $427,600), and a decade at the derived rate of 2.52% adds up to about 25.24% of the median home's value in tax. The cheapest county in the state, Cumberland County, medians $5,048 — $3,108 less than Warren County per year.
Counties nearest Warren County in the New Jersey ranking
| County | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|
| Mercer County, NJ | $8,804 | $351,000 | 2.51% |
| Sussex County, NJ | $8,462 | $342,800 | 2.47% |
| Camden County, NJ | $8,063 | $262,200 | 3.08% |
| Gloucester County, NJ | $7,964 | $283,500 | 2.81% |
Warren County and its population peers
For a like-for-like sense of scale, compare Warren County with its national population peers: the counties nearest to its 110,238 residents, listed in the table below with their own Census medians. Of the 9 counties in that group, Warren County's median bill of $8,156 is the highest.
| County | Population | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|---|
| Hardin County, KY | 111,452 | $1,451 | $205,900 | 0.70% |
| Bartow County, GA | 111,153 | $1,901 | $262,200 | 0.72% |
| Matanuska-Susitna Borough, AK | 110,677 | $3,512 | $319,200 | 1.10% |
| Madison County, MS | 110,303 | $2,071 | $286,300 | 0.72% |
| Mercer County, PA | 109,852 | $1,943 | $153,600 | 1.26% |
| Bradley County, TN | 109,743 | $1,174 | $230,800 | 0.51% |
| Miami County, OH | 109,549 | $2,106 | $209,200 | 1.01% |
| Cass County, MO | 109,393 | $2,364 | $269,000 | 0.88% |
The closest population match is Madison County, Mississippi (110,303 residents), where the median real estate tax paid is $2,071 on a median home value of $286,300 — $6,085 more than Warren County pays.
Inside New Jersey itself, the counties closest to Warren County in population are Sussex County (145,117 residents, median tax $8,462 on a median value of $342,800); Hunterdon County (129,448 residents, median tax $10,001 on a median value of $498,800); Cape May County (95,236 residents, median tax $5,233 on a median value of $395,000); Salem County (64,973 residents, median tax $6,757 on a median value of $223,000). Same state, same broad tax framework — yet the median bills still differ, because assessed values and the mix of county, municipal and school-district rates are set locally.
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 2.52%, each $100,000 of value corresponds to about $2,524 of tax a year, and a $400,000 home to roughly $10,096. Real bills use the official assessment and district rates, not this derived figure, so treat the example as a sense of scale only.
Illustrative bills in Warren County at the derived rate
The derived rate of 2.52% is only an estimate built from medians, but applying it to different home values gives a sense of scale for Warren County — and a quick way to compare with the state derived rate of 2.23% and the US figure of 0.98%:
| Home value | Illustrative tax / year | Per month |
|---|---|---|
| $150,000 | $3,786 | $316 |
| $250,000 | $6,310 | $526 |
| $350,000 | $8,834 | $736 |
| $500,000 | $12,620 | $1,052 |
| $750,000 | $18,930 | $1,578 |
Illustration only: real bills are computed from the assessed value, exemptions, and the combined rates of the property's actual taxing districts.
Checking your assessment in Warren County
Believe your assessment is too high? The practical order of attack is: obtain your record card and audit it line by line; collect comparable recent sales in Warren County; ask the assessor's office to correct anything plainly wrong; and, if the value still seems off, lodge a formal appeal ahead of the deadline printed on your assessment notice. Windows are short — often 30 to 90 days — and late appeals are usually rejected outright, however strong the case.
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Frequently asked questions
What is the median property tax in Warren County, New Jersey?
The median real estate tax paid in Warren County, New Jersey is $8,156 per year, on a median home value of $323,100 (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
What is the effective property tax rate in Warren County, New Jersey?
Dividing Warren County's median tax bill ($8,156) by its median home value ($323,100) gives a derived effective rate of 2.52%. This is an estimate computed from two Census survey medians — it is not the county's official tax rate.
How does Warren County compare with the rest of New Jersey?
Warren County ranks #13 of 21 New Jersey counties with published data by median taxes paid. Its median bill of $8,156 is about 15% lower than the New Jersey median of $9,541.
How are property taxes calculated in Warren 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 Warren County, the median outcome of that process is a bill of $8,156 on a median home value of $323,100.
Can I appeal my property tax assessment in Warren County, New Jersey?
Yes — appeals are handled locally. Start with the Warren County assessor's property record card for your home, correct any factual errors, and back your case with comparable recent sales. Formal appeals go to the review board named on your assessment notice and must be filed by its deadline, typically within 30 to 90 days.