Property Taxes in Hamilton Square, New Jersey
Median Hamilton Square, New Jersey effective property tax rate: 3.30%, significantly higher than the national median of 1.02%, and higher than the New Jersey state median of 2.88%.
Median Hamilton Square, New Jersey home value: $104,400
Median annual Hamilton Square, New Jersey tax bill: $3,448, $1,048 higher than the national median property tax bill of $2,400.
How are property taxes in Mercer calculated?
Property taxes in Hamilton Square, 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 Hamilton Square's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Hamilton Square, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Hamilton Square Property Tax Calculator Work?
Use this Hamilton Square property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Hamilton Square's median effective tax rate of 3.30% — based on actual property records in Mercer County — to generate your estimate.
Enter your property's estimated assessed value — the figure used to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Hamilton Square'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 Hamilton Square: rates range from 3.30% in 08690 to 3.30% in 08690, 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 Hamilton Square.
About Hamilton Square Property Taxes
About Property Taxes in Hamilton Square, Mercer, New Jersey
Hamilton Square's median effective property tax rate of 3.30% is higher than the New Jersey state median of 2.88% and higher than the national median of 1.02%. This rate reflects the Mercer 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 Hamilton Square. Homeowners in the 08690 ZIP code carry a median effective rate of 3.30%, while those in the lowest ZIP code pay 3.30%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Mercer County. Understanding which part of Hamilton Square you live in can make a meaningful difference to your annual tax bill.
Hamilton Square homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before April 1, 2026.
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 Hamilton Square, Mercer 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 Hamilton Square'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 ÷ 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 Hamilton Square Tax Rate
3.30%
Our median effective property tax rate (tax bill ÷ 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 Mercer County Tax Rate
3.30%
Median Effective New Jersey Tax Rate
2.88%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Hamilton Square, Mercer County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 08690 | 3.30% | 3.30% | 3.30% | 3.30% | 3.30% |
Source: Ownwell
Property Tax Assessment Values Across Hamilton Square, Mercer County, New Jersey
When examining property taxes in Hamilton Square, 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 Mercer County appraisal district 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 Mercer County, assessment notices are sent in January 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 Hamilton Square.
For example, the median home price in Hamilton Square is $104,400, with tax bills ranging significantly across the county. 08690 has the highest median home price at $104,400.
Property Tax Assessment Values Across Hamilton Square, Mercer County, New Jersey
Source: Ownwell
$42,100
$567,900
$1,093,700
Median Hamilton Square Market Value
$104,400
Median Mercer County Market Value
$217,000
Median New Jersey Market Value
$288,200
Median United States Market Value
$274,101
Property Tax Assessment Values Across Hamilton Square, Mercer County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 08690 | $88,300 | $88,300 | $104,400 | $111,650 | $115,100 |
Source: Ownwell
Property Tax Bills Across Hamilton Square, Mercer County, New Jersey
Property tax bills in Hamilton Square are based on the assessed value of a home and the local tax rate set by Mercer County and other taxing authorities. When a property’s assessed value rises, the tax bill can increase as well, even if the homeowner has not made any changes to the home. For Hamilton Square, the median home price is $104,400, and the median property tax bill is $3,448, which is higher than the national median property tax bill of $2,400.
Several factors influence the final bill, including the home’s assessed market value, local budgets, and any exemptions or appeals that may apply. A homeowner in Hamilton Square may see bills around $2,917 at the 25th percentile and $3,802 at the 90th percentile, showing how much taxes can vary from one property to another.
For homeowners, this means property taxes can have a meaningful impact on monthly housing costs and long-term affordability.
Property Tax Bills Across Hamilton Square, Mercer County, New Jersey
Source: Ownwell
$2,305
$17,864
$33,423
Median Hamilton Square Tax Bill
$3,448
Median Mercer County Tax Bill
$7,344
Median New Jersey Tax Bill
$8,638
Median United States Tax Bill
$3,209
Property Tax Bills Across Hamilton Square, Mercer County, New Jersey
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 08690 | $2,917 | $2,917 | $3,448 | $3,688 | $3,802 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | April 1 |
Links | |
|---|---|
| Mercer Tax Assessor | |
| Website | pip.mercercounty.org |