Armstrong County tax maps are available for viewing only in person at the county Assessment Office in Kittanning. The county does not operate an online GIS viewer, so there is no public website where you can pull up a parcel map from home.1Armstrong County. Geographic Information Systems The maps show parcel boundaries, lot dimensions, and acreage, and those figures feed directly into the assessed value the county uses to calculate your property tax.
What the Maps Show
Each tax map is a scaled drawing that divides the county into individual parcels, every one carrying a unique parcel number. Boundary lines separate one property from the next, dimensions run along those lines to show the length of each side, and total acreage is labeled inside the parcel so the Assessment Office can tie the right amount of land to the right tax account.
Neighboring parcels appear on the same sheet, which lets you see shared property lines, public roads, and rights-of-way. That context helps if you are checking setbacks or trying to spot an easement crossing your land.
Viewing the Maps in Person
The GIS department and Assessment Office share space in the Courthouse Administration Building.1Armstrong County. Geographic Information Systems
- Address: 450 E. Market Street, Suite 20, Kittanning, PA 16201
- Phone: 724-548-3336
- Hours: Monday through Friday, 8:00 AM to 4:30 PM, closed noon to 1:00 PM for lunch
Bring as much identifying information as you can. A parcel number is the fastest way to find a specific sheet, but staff can also search by owner name or street address. Ownership on the map reflects the deeds recorded with the county Recorder of Deeds.2Pennsylvania General Assembly. Pennsylvania Code 72 PS 5020-407 – Conveyances, Assessment, Mobilehouse Courts, Owner, Removal Permits, Penalty
Getting a Copy
You can request printed or certified copies of map sheets at the Assessment Office during business hours. Call 724-548-3336 before you go to confirm the current fee and accepted payment methods, since the cost depends on the size and type of document.3Armstrong County. Assessment A certified copy carries the Assessment Office’s official stamp and can be used for legal proceedings, boundary disputes, or land-use applications.
You also have the option of a written request under Pennsylvania’s Right-to-Know Law. The county must respond within five business days. If the request covers complex data such as GIS files, fees can be based on the reasonable market value of the data set rather than ordinary duplication costs; a single printed map sheet costs far less.4Pennsylvania General Assembly. Right-to-Know Law – Act 3 of 2008
How the Map Affects Your Tax Bill
The parcel boundaries and acreage on the tax map feed into your assessed value, which the county multiplies by the applicable millage rates to produce your annual bill. Armstrong County’s 2026 county real estate millage is 0.020, with an additional 0.004 in county debt millage. Your borough or township adds its own millage, and your school district adds another layer on top.5Armstrong County. 2026 Armstrong County Millage Rates
If the map overstates your acreage or shows land you do not own, correcting it with the Assessment Office can lower what you owe.
Appealing Your Assessment
If the map and your assessment records convince you the county has overvalued your property, you can appeal. You cannot appeal the tax rate itself, only the assessed value. Armstrong County accepts appeal applications between July 15 and September 1 each year. If you receive a Change of Assessment notice, you have 40 days from that notice to file.6Armstrong County. Assessment Appeals FAQ
The filing fee is $35 for residential properties and $125 for commercial properties or those seeking tax-exempt status. The county strongly recommends bringing an independent appraisal to the hearing. Bank appraisals and real estate agent opinions do not qualify; the appraisal must be conducted specifically for tax-appeal purposes and completed within the past year. Without one, the board will likely delay its decision and may deny the appeal if no qualifying appraisal is submitted by the deadline it sets.6Armstrong County. Assessment Appeals FAQ
Appeal applications are available at the Assessment Office or on the Armstrong County website. If you cannot attend in person, your attorney or spouse may represent you.6Armstrong County. Assessment Appeals FAQ