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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Warren County, New Jersey

Warren County has an effective property tax rate of 2.34%. On the median home value of $346,500, that's roughly $8,119 per year. Median household income is $100,869.

Effective Property Tax Rate1
2.34%
median tax $8,119 ÷ median home $346,500
Median Home Value1
$346,500
owner-occupied
Median Household Income1
$100,869
per-capita $48,600
Est. Annual Tax on Median Home1
$8,119
at 2.34% effective rate

What you'll pay, at a glance

Property taxes are the largest local tax most homeowners pay. The effective rate measures the real tax bill as a share of home value — a more useful number than the nominal “mill rate,” because assessment practices vary county to county.

MetricWarren CountyNew Jersey (state context)
Effective property tax rate12.34%2.10%
Median home value1$346,500—
State income tax3top rate 10.75%top rate 10.75%
State sales tax36.60% combined6.60% combined

How this is calculated

The effective property tax rate is the median real-estate tax bill divided by the median home value — both for owner-occupied homes, from the U.S. Census Bureau's American Community Survey (ACS 5-year estimates)1. Median income is also from the ACS1. Federal and state income-tax figures use IRS2 and Tax Foundation3 data.

About Warren County, NJ

For a buyer weighing a move to Warren County, New Jersey, the tax picture matters as much as the sticker price. Homes here run about $346,500 at the median, but the effective property tax rate of 2.343% pushes the median annual bill to $8,119. That rate sits above New Jersey's statewide median of 2.098% and ranks 5th among the state's 21 counties, so taxes take a bigger bite than in most Garden State communities. Nationally, the gap looks even wider, since the U.S. median effective rate is just 0.794%. Households earning the county median of $100,869 would devote roughly eight percent of that income to property taxes alone. Belvidere and other towns like Allamuchy and Changewater offer the county's housing stock, and buyers should factor that $8,119 figure into budgets before committing.

Frequently asked questions

What is the property tax rate in Warren County, NJ?
The effective rate is 2.34% — meaning the median tax bill equals about 2.34% of the median home value.
How much are property taxes on a median home?
On the median home ($346,500), the estimated annual bill is about $8,119.
Is Warren County's rate high or low?
Compare it to the state median of 2.10% and the national average near 1.1%.
How does the effective rate differ from my mill rate?
A mill rate is the nominal levy per $1,000 of assessed value. The effective rate reflects what you actually pay after exemptions and assessments — it's the median tax bill as a share of median home value, so it better predicts your real cost.
Will a reassessment raise my tax bill?
Not necessarily. If your home's assessed value rises, your bill can go up, but only if the mill rate and exemptions stay flat. Contact the Warren County assessor's office to review your current assessment.
Can I appeal my property tax assessment?
Yes. Most counties allow an appeal when you believe the assessed value exceeds the market value. File with the Warren County assessor within the local deadline, typically with comparable sales as evidence.
Sources
[1] U.S. Census Bureau — ACS 5-Year (2023) — Median home value (B25077), median real-estate taxes (B25103), median household income (B19013), per-capita income (B19301).
[2] IRS — Statistics of Income — County income, AGI, and real-estate taxes paid.
[3] Tax Foundation — State income, sales, corporate, and estate/inheritance tax rates.