Texas · FIPS 48235 · County seat: Mertzon
Irion County, TX GIS & Parcel Viewer
Use this page to reach the official county parcel map for Irion County, Texas. The button below opens the Irion County appraisal district map in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Irion County parcel map ↗
Opens irioncad.org in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Irion County appraisal district map |
|---|---|
| Type | Appraisal district map (county level) |
| Website | irioncad.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | Mertzon |
| Population | 1,549 (2023 Census Bureau estimate) |
| Land area | 1,052 sq mi |
| FIPS code | 48235 |
About the official source
In Texas, property values are set by appraisal districts rather than by the county government, so this map comes from the appraisal district that serves Irion County. As of our October 2026 test, anyone could open it without signing in or paying.
How to use the Irion County viewer
- Open the link. In Texas, each county's appraisal district (CAD) values property for local taxing units, and this is the CAD's public map.
- Search by owner, address or property ID. The property ID is the account number the CAD uses on its records.
- Click a parcel on the map to bring up its account summary.
- Use the account details to look up values or the full appraisal record on the CAD's site.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
About Irion County
Census Bureau figures put Irion County at about 1,549 people (2023 estimate) on roughly 1,052 square miles of land, which is about 1.5 residents per square mile. Among Texas's 254 counties, it is the 237th largest by population. The county seat is Mertzon.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Irion County:
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.