Pennsylvania · FIPS 42077 · County seat: Allentown
Lehigh County, PA GIS & Parcel Viewer
Lehigh County, Pennsylvania parcel data lives on Lehigh County Parcel Viewer. Open it below in a new tab, then use the short steps on this page to find a property fast.
Open the Lehigh County parcel map ↗
Opens lehighgis.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Lehigh County Parcel Viewer |
|---|---|
| Type | County-run map |
| Website | lehighgis.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Allentown |
| Population | 377,754 (2023 Census Bureau estimate) |
| Land area | 345 sq mi |
| FIPS code | 42077 |
Who runs this map
Lehigh County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this map
- Open the official link. The viewer is built with ArcGIS Web AppBuilder; if a disclaimer pops up, accept it to continue.
- Use the search widget, usually in the upper left, to find a street address or parcel ID.
- Click a parcel to open its info window.
- The widget bar holds extras such as the layer list, basemap switcher, measure and print tools.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
Lehigh County by the numbers
Lehigh County had an estimated 377,754 residents in 2023, according to the Census Bureau. With about 345 square miles of land, that works out to roughly 1,095 people per square mile. That makes it number 10 out of 67 Pennsylvania counties by population. The county seat is Allentown.
Counties next to Lehigh County
Lehigh County shares a border with the counties below. Each link has its own official map:
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.