Property Taxes in Williamstown, Pennsylvania
Median Williamstown, Pennsylvania effective property tax rate: 3.59%, significantly higher than the national median of 1.02%, and higher than the Pennsylvania state median of 2.75%.
Median Williamstown, Pennsylvania home value: $41,100
Median annual Williamstown, Pennsylvania tax bill: $1,420, $980 lower than the national median property tax bill of $2,400.
How are property taxes in Dauphin calculated?
Property taxes in Williamstown, Pennsylvania 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 Williamstown's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Williamstown, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Williamstown Property Tax Calculator Work?
Use this Williamstown property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Williamstown's median effective tax rate of 3.59% — based on actual property records in Dauphin 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 Williamstown'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 Williamstown: rates range from 1420.00 in 17098 to 1420.00 in 17098, 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 Williamstown.
About Williamstown Property Taxes
About Property Taxes in Williamstown, Dauphin, Pennsylvania
Williamstown’s median effective property tax rate of 3.59% is higher than the Pennsylvania state median of 2.75% and higher than the national median of 1.02%. This rate reflects the Dauphin County base levy combined with local school district levies and special taxing districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Williamstown. Homeowners in the 17098 ZIP code carry a median effective rate of 3.59%, while those in 17098 pay 3.59%. This spread — 0 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Dauphin County. Understanding which part of Williamstown you live in can make a meaningful difference to your annual tax bill.
Williamstown homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the August 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 Williamstown, Dauphin County, Pennsylvania
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 Williamstown's effective property tax rate to other cities in Pennsylvania and the median property tax rates in Pennsylvania 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 Williamstown Tax Rate
3.59%
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 Dauphin County Tax Rate
3.13%
Median Effective Pennsylvania Tax Rate
2.75%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Williamstown, Dauphin County, Pennsylvania
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 17098 | 3.12% | 3.12% | 3.59% | 3.59% | 3.59% |
Source: Ownwell
Property Tax Assessment Values Across Williamstown, Dauphin County, Pennsylvania
When examining property taxes in Williamstown, Pennsylvania, 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 Dauphin County assessment office 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 Dauphin County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month.
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. For Williamstown homeowners, the median home price is $41,100, and the median property tax bill is $1,420, compared with the national median property tax rate of 1.02% and national median property tax bill of $2,400. The highest median home price in the area is $41,100 in ZIP code 17098.
Property Tax Assessment Values Across Williamstown, Dauphin County, Pennsylvania
Source: Ownwell
$36,700
$90,550
$144,400
Median Williamstown Market Value
$41,100
Median Dauphin County Market Value
$99,500
Median Pennsylvania Market Value
$118,310
Median United States Market Value
$274,101
Property Tax Assessment Values Across Williamstown, Dauphin County, Pennsylvania
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 17098 | $25,070 | $31,800 | $41,100 | $54,800 | $79,930 |
Source: Ownwell
Property Tax Bills Across Williamstown, Dauphin County, Pennsylvania
Property tax bills in Williamstown are based on the assessed value of a home, which is then multiplied by the local tax rate. For homeowners, that means the bill depends on both the market value of the property and how the county and local taxing authorities assess it. When assessments rise, tax bills can increase even if nothing else changes.
In Williamstown, the median home price is $41,100, and the median property tax bill is $1,420. That is below the national median property tax bill of $2,400, but the amount can still vary widely from one homeowner to another. The 25th percentile tax bill is $1,083, while the 75th percentile is $1,851 and the 90th percentile reaches $2,557.
Because property taxes are tied to assessed value, homeowners with higher-valued homes or higher assessments generally pay more. This makes property taxes an important part of the cost of owning a home in Williamstown.
Property Tax Bills Across Williamstown, Dauphin County, Pennsylvania
Source: Ownwell
$1,289
$2,898
$4,507
Median Williamstown Tax Bill
$1,420
Median Dauphin County Tax Bill
$3,289
Median Pennsylvania Tax Bill
$3,050
Median United States Tax Bill
$3,209
Property Tax Bills Across Williamstown, Dauphin County, Pennsylvania
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 17098 | $833 | $1,083 | $1,420 | $1,851 | $2,557 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | August 1 |
Links | |
|---|---|
| Dauphin Tax Assessor | |
| Website | dauphinpa.devnetwedge.com |