Texas · FIPS 48491 · County seat: Georgetown
Williamson County, TX GIS & Parcel Viewer
Here is the direct link to the county parcel map covering Williamson County, TX: the Williamson County appraisal district map. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Williamson County parcel map ↗
Opens search.wcad.org in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Williamson County appraisal district map |
|---|---|
| Type | Appraisal district map (county level) |
| Website | search.wcad.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | Georgetown |
| Population | 697,191 (2023 Census Bureau estimate) |
| Land area | 1,116 sq mi |
| FIPS code | 48491 |
Who runs this map
The source here is the Williamson County appraisal district. Texas law gives these districts the job of valuing property for every local taxing unit in the county. As of our October 2026 test, anyone could open it without signing in or paying.
How to use the Williamson County viewer
- 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.
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.
Williamson County by the numbers
Census Bureau figures put Williamson County at about 697,191 people (2023 estimate) on roughly 1,116 square miles of land, which is about 625 residents per square mile. Among Texas's 254 counties, it is the 12th largest by population. Georgetown serves as the county seat.
Counties next to Williamson County
Parcels close to the edge of Williamson County can fall in the next county over. Neighboring counties:
Our longer guides
Maps vs. surveys
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.