Armstrong County, PA Property Tax: $2,175/yr (2026)
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The effective property tax rate in Armstrong County is 1.49% of assessed home value. On a home at the county median value of $146,300, that works out to about $2,180 per year, or $182 per month. Armstrong County is located in western Pennsylvania, and is home to approximately 65,069 residents.
About Armstrong County
Armstrong County covers approximately 653.3 square miles in Pennsylvania. The county is home to about 65,069 residents living in roughly 32,164 housing units, of which 68.5% are owner-occupied. The median household income is $64,295, and the median home was built in 1960.
Armstrong County borders Allegheny County, Butler County, Clarion County, Indiana County, Jefferson County — useful comparisons if you're considering nearby areas with potentially different tax rates.
How Property Taxes Work in Pennsylvania
Property taxes in Pennsylvania are administered at the county level. Each county sets a millage rate applied to the assessed value of real property — the effective rate above accounts for any partial assessments and exemptions already built into the local tax base. Assessed value can differ meaningfully from current market value depending on how often the county reassesses and what fraction of market value it uses.
Most counties in Pennsylvania offer exemptions that reduce the taxable assessed value: homestead exemptions for primary residences, senior exemptions, disability exemptions, and veteran exemptions are common. These reduce your effective rate below the county-wide average shown here. Contact the Armstrong County Assessor's office to learn which exemptions apply to your property and when to file.
Armstrong County vs. Neighboring Counties
| Location | Eff. Rate | Median Home | Annual Tax |
|---|---|---|---|
| Armstrong County, PA | 1.49% | $146,300 | $2,180 |
| Pennsylvania state average | 1.32% | — | $1,931* |
| Allegheny County | 1.57% | $216,700 | $3,399 |
| Butler County | 1.07% | $275,600 | $2,950 |
| Clarion County | 0.97% | $152,100 | $1,477 |
| Indiana County | 1.56% | $145,400 | $2,271 |
| Jefferson County | 1.11% | $126,700 | $1,411 |
| US national average | 1.10% | $281,900 | $3,101 |
*State average annual tax computed at Armstrong County's median home value of $146,300. Source: US Census ACS 2023 5-year estimates.
Frequently Asked Questions
How does Armstrong County's property tax rate compare to the rest of Pennsylvania?
At 1.49%, Armstrong County is higher than the Pennsylvania state average of 1.32%. On a home at the county median of $146,300, that means about $2,180 per year — versus $1,931 at the state average rate, a difference of $249 per year. Compared to the national average of 1.10%, Armstrong County is above average.
What's a typical annual property tax bill in Armstrong County?
For a home at the county median value of $146,300, the annual property tax in Armstrong County is approximately $2,180 — or about $182 per month. For a home worth $219,450, expect around $3,270 per year. For a $292,600 home, approximately $4,360 per year. Use the calculator above to estimate taxes for any assessed value.
Where do I appeal a Armstrong County property tax assessment?
Property assessment appeals in Armstrong County are handled by the Armstrong County Assessor's office. Most jurisdictions require filing within 30–90 days of receiving your assessment notice — confirm the specific deadline with the assessor's office before submitting, as deadlines and procedures vary by county. A successful appeal can reduce your assessed value and lower your tax bill for the current and future tax years.
What exemptions are available in Armstrong County?
Pennsylvania counties commonly offer homestead exemptions for owner-occupied primary residences, senior citizen exemptions for qualifying homeowners aged 65 and older, exemptions for disabled residents, and veterans' exemptions. Each exemption reduces your assessed taxable value, which in turn reduces your effective tax rate below the county-wide 1.49% shown here. Contact the Armstrong County Assessor's office to confirm which exemptions are available and the application deadlines.
Data sources: US Census Bureau ACS 2023 5-Year Estimates, US Census Gazetteer (2024), County Adjacency File