Pennsylvania · FIPS 42087 · County seat: Lewistown
Mifflin County, PA GIS & Parcel Viewer
Mifflin County, Pennsylvania parcel data lives on PASDA Pennsylvania Tax Parcels viewer. Open it below in a new tab, then use the short steps on this page to find a property fast.
Open the Mifflin County statewide map ↗
Opens pasda.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Mifflin County at a glance
| Official map | PASDA Pennsylvania Tax Parcels viewer |
|---|---|
| Type | Statewide map (covers all of Pennsylvania) |
| Website | pasda.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Lewistown |
| Population | 45,922 (2023 Census Bureau estimate) |
| Land area | 411 sq mi |
| FIPS code | 42087 |
Who runs this map
This is a statewide map, not a county site. PASDA Pennsylvania Tax Parcels viewer covers parcels across Pennsylvania, and Mifflin County is one part of it. Because a state agency compiles this layer from local data, check with the Mifflin County assessor or recorder before relying on a recent change. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this statewide map
- Open PASDA Pennsylvania Tax Parcels viewer in a new tab and zoom to Mifflin County (around Lewistown).
- Type a street address into the search box, or click directly on a parcel.
- Review the parcel attributes; field names vary by state.
- Confirm anything important with the county assessor, since the statewide layer is a compiled copy.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
About Mifflin County
Census Bureau figures put Mifflin County at about 45,922 people (2023 estimate) on roughly 411 square miles of land, which is about 112 residents per square mile. By population it ranks 47th of 67 counties in Pennsylvania. Its county seat is Lewistown.
Neighboring counties
Parcels close to the edge of Mifflin County can fall in the next county over. Neighboring counties:
Maps vs. surveys
Treat the map as a guide, not a boundary survey: parcel outlines are often shifted a bit from the real corners. A licensed surveyor settles exact lines.