Texas · FIPS 48311 · County seat: Tilden
McMullen County, TX GIS & Parcel Viewer
Here is the direct link to the county parcel map covering McMullen County, TX: the McMullen County appraisal district map. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the McMullen County parcel map ↗
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Quick facts
| Official map | McMullen County appraisal district map |
|---|---|
| Type | Appraisal district map (county level) |
| Website | gis.bisclient.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Tilden |
| Population | 568 (2023 Census Bureau estimate) |
| Land area | 1,140 sq mi |
| FIPS code | 48311 |
Who runs this map
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 McMullen County. Our October 2026 check found the map open to the public, with no account or payment needed.
Searching for a parcel, step by step
- 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.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
About McMullen County
Census Bureau figures put McMullen County at about 568 people (2023 estimate) on roughly 1,140 square miles of land, which is about 0.5 residents per square mile. Among Texas's 254 counties, it is the 251st largest by population. The county seat is Tilden.
Nearby parcel maps
McMullen County shares a border with the counties below. Each link has its own official map:
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.