Property Taxes in Hackettstown, New Jersey
Median Hackettstown, New Jersey effective property tax rate: 3.55%, significantly higher than the national median of 1.02%, and higher than the New Jersey state median of 2.88%.
Median Hackettstown, New Jersey home value: $246,750
Median annual Hackettstown, New Jersey tax bill: $8,494, $6,094 higher than the national median property tax bill of $2,400.
How are property taxes in Warren County calculated?
Property taxes in Hackettstown, New Jersey are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding Hackettstown's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Hackettstown, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Hackettstown Property Tax Calculator Work?
Use this Hackettstown property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Hackettstown's median effective tax rate of 3.55% — based on actual property records in Warren County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment system uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Hackettstown's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Hackettstown: rates range from 3.55% in 07840 to 3.55% in 07840, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Hackettstown.
About Hackettstown Property Taxes
About Property Taxes in Hackettstown, Warren, New Jersey
Hackettstown’s median effective property tax rate of 3.55% is higher than the New Jersey state median of 2.88% and higher than the national median of 1.02%. This rate reflects the Warren County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Hackettstown. Homeowners in the 07840 ZIP code carry a median effective rate of 3.55%, while those in the same ZIP code also pay 3.55%. This spread reflects how school district boundaries and local assessment districts are drawn across Warren County. Understanding which part of Hackettstown you live in can make a meaningful difference to your annual tax bill.
Hackettstown homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before the April 1, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Hackettstown, Warren County, New Jersey
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Hackettstown's effective property tax rate to other cities in New Jersey and the median property tax rates in New Jersey and the U.S.
Our median effective property tax rate (tax bill Ă· assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Hackettstown Tax Rate
3.55%
Our median effective property tax rate (tax bill Ă· assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Warren County Tax Rate
3.55%
Median Effective New Jersey Tax Rate
2.88%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Hackettstown, Warren County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 07840 | 3.37% | 3.37% | 3.55% | 3.59% | 3.74% |
Source: Ownwell
Property Tax Assessment Values Across Hackettstown, Warren County, New Jersey
When examining property taxes in Hackettstown, New Jersey, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Warren County tax authority estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Warren County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of January.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Hackettstown.
For example, the median home price in Hackettstown is $246,750, with tax bills ranging significantly across the county. 07840 has the highest median home price at $246,750.
Property Tax Assessment Values Across Hackettstown, Warren County, New Jersey
Source: Ownwell
$144,350
$238,125
$331,900
Median Hackettstown Market Value
$246,750
Median Warren County Market Value
$206,900
Median New Jersey Market Value
$288,200
Median United States Market Value
$274,101
Property Tax Assessment Values Across Hackettstown, Warren County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 07840 | $135,250 | $183,100 | $246,750 | $310,875 | $359,700 |
Source: Ownwell
Property Tax Bills Across Hackettstown, Warren County, New Jersey
Property tax bills in Hackettstown are determined by the assessed value of a home and the local tax rate set by the taxing authorities in Warren County. When a property’s assessed value rises, the tax bill can increase even if the homeowner has not made major changes to the home. Local budgets for schools, municipal services, and county needs all play a role in setting the final bill.
For Hackettstown homeowners, the tax burden is substantial compared with the national median property tax bill of $2,400. The median home price is $246,750, and tax bills are often much higher than the national norm. The 25th percentile tax bill is $6,569, while the 75th percentile is $10,901 and the 90th percentile is $12,694. The median tax bill in ZIP code 07840 is $8,494, showing how property taxes can significantly affect monthly housing costs and long-term affordability.
Median Hackettstown Tax Bill
$8,494
Median Warren County Tax Bill
$7,155
Median New Jersey Tax Bill
$8,638
Median United States Tax Bill
$3,209
Property Tax Bills Across Hackettstown, Warren County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 07840 | $4,971 | $6,569 | $8,494 | $10,901 | $12,694 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | April 1 |
Links | |
|---|---|
| Warren Tax Assessor | |
| Website | www.warrencountynj.gov |