Texas · FIPS 48333 · County seat: Goldthwaite
Mills County, TX GIS & Parcel Viewer
Looking for lot lines or a parcel number in Mills County, TX? The quickest route is the Mills County appraisal district 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 Mills County parcel map ↗
Opens gis.bisclient.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Mills County appraisal district map |
|---|---|
| Type | Appraisal district map (county level) |
| Website | gis.bisclient.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Goldthwaite |
| Population | 4,548 (2023 Census Bureau estimate) |
| Land area | 748 sq mi |
| FIPS code | 48333 |
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 Mills County. 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 to open the appraisal district's map. Texas appraisal districts set taxable values, so their maps tie each parcel to a property account.
- Look up a property by its owner, situs address or property ID.
- Click any lot to see the account number and basic details.
- Follow the record link, when there is one, for values and exemptions.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
The county in brief
Mills County had an estimated 4,548 residents in 2023, according to the Census Bureau. With about 748 square miles of land, that works out to roughly 6.1 people per square mile. That makes it number 205 out of 254 Texas counties by population. Its county seat is Goldthwaite.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Mills County:
Maps vs. surveys
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.