Pennsylvania · FIPS 42119 · County seat: Lewisburg
Union County, PA GIS & Parcel Viewer
Use this page to reach the official statewide parcel map for Union County, Pennsylvania. The button below opens PASDA Pennsylvania Tax Parcels viewer in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Union County statewide map ↗
Opens pasda.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Union 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 | Lewisburg |
| Population | 42,042 (2023 Census Bureau estimate) |
| Land area | 316 sq mi |
| FIPS code | 42119 |
Where the parcel data comes from
The link goes to a statewide map (PASDA Pennsylvania Tax Parcels viewer). It shows parcels for Union County along with the rest of Pennsylvania. Because a state agency compiles this layer from local data, check with the Union 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.
Searching for a parcel, step by step
- Press the button to load the statewide viewer, then move the map to Union County.
- Use the viewer's search tool to find an address or parcel, if it has one.
- Click a lot to read its details.
- For deeds, taxes or official copies, take the parcel number to the county's own offices.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
The county in brief
Union County had an estimated 42,042 residents in 2023, according to the Census Bureau. With about 316 square miles of land, that works out to roughly 133 people per square mile. That makes it number 50 out of 67 Pennsylvania counties by population. Lewisburg serves as the county seat.
Neighboring counties
Parcels close to the edge of Union County can fall in the next county over. Neighboring counties:
A note on accuracy
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.