Indiana · FIPS 18127 · County seat: Valparaiso
Porter County, IN GIS & Parcel Viewer
Porter County, Indiana parcel data lives on Porter County Data Map 2.0. Open it below in a new tab, then use the short steps on this page to find a property fast.
Open the Porter County parcel map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Porter County Data Map 2.0 |
|---|---|
| Type | County-run map |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Valparaiso |
| Population | 175,335 (2023 Census Bureau estimate) |
| Land area | 418 sq mi |
| FIPS code | 18127 |
Who runs this map
This map is published by or for Porter County itself, so it reflects the local parcel layer rather than a third-party copy. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this map
- Press the button above; an ArcGIS Experience Builder app opens in a new tab. Accept any splash or disclaimer screen.
- Search by address or parcel ID, or pan to the area.
- Select a parcel to view the information the publisher makes available.
- Explore the app's panels for layers, legends or printing.
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.
Porter County by the numbers
The U.S. Census Bureau estimated Porter County's population at 175,335 in 2023, spread over about 418 square miles of land, or roughly 419 people per square mile. By population it ranks 10th of 92 counties in Indiana. Another 104 square miles of water fall within its lines, according to Census mapping. Valparaiso serves as the county seat.
Nearby parcel maps
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Porter County:
More on Porter County parcel maps
A note on accuracy
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.