Indiana · FIPS 18171 · County seat: Williamsport
Warren County, IN GIS & Parcel Viewer
Looking for lot lines or a parcel number in Warren County, IN? The quickest route is Warren County, IN Map, the county parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Warren County parcel map ↗
Opens warrenin.wthgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Warren County, IN Map |
|---|---|
| Type | County-run map |
| Website | warrenin.wthgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Williamsport |
| Population | 8,518 (2023 Census Bureau estimate) |
| Land area | 365 sq mi |
| FIPS code | 18171 |
Who runs this map
Warren County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. As of our October 2026 test, anyone could open it without signing in or paying.
Searching for a parcel, step by step
- Open the official link; the map is hosted on WTH GIS, a vendor platform used by 44 counties in our directory.
- Accept any disclaimer, then use the search tool to find a street address, owner or parcel ID.
- Click a parcel to view its attributes.
- Use the layer or basemap controls to add aerials and other layers where the county provides them.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
About Warren County
Census Bureau figures put Warren County at about 8,518 people (2023 estimate) on roughly 365 square miles of land, which is about 23 residents per square mile. That makes it number 90 out of 92 Indiana counties by population. Its county seat is Williamsport.
Nearby parcel maps
Parcels close to the edge of Warren County can fall in the next county over. Neighboring counties:
A note on accuracy
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.