Williamson County, Texas
What we have for Williamson County today, and what is coming.
Basics
- County code (FIPS): 48491
- Land area: 1,116 square miles
- Population: 609,017
Federal money spent here
Fiscal year 2026: $5.0 billion in federal contracts, grants, loans and other awards for work done in Williamson County.
Who represents Williamson County
U.S. Senate (whole state): John Cornyn (Republican), Ted Cruz (Republican).
U.S. House districts that include part of this county
| District | Member | Share of county land |
|---|---|---|
| Congressional District 31 | John R. Carter (Republican) | 78.1% |
| Congressional District 17 | Pete Sessions (Republican) | 18.8% |
| Congressional District 10 | Michael T. McCaul (Republican) | 1.6% |
| Congressional District 37 | Lloyd Doggett (Democrat) | 1.5% |
State senate districts
| District | Member | Share of county land |
|---|---|---|
| State Senate District 5 | Charles Schwertner (Republican) | 90% |
| State Senate District 24 | Pete Flores (Republican) | 10% |
State house / assembly districts
| District | Member | Share of county land |
|---|---|---|
| State House District 52 | Caroline Harris Davila (Republican) | 60.6% |
| State House District 20 | Terry Wilson (Republican) | 34.1% |
| State House District 136 | John Bucy (Democratic) | 5.3% |
Matched by district number using the U.S. Census Bureau 2020 county–district relationship files (land area overlap; districts may have been redrawn since). Your exact district depends on your address: U.S. House · state legislators.
County government
Find the official county website and contacts in the USA.gov local government directory or the National Association of Counties explorer.
Coming next for counties: county commission meetings and agendas, county budgets, local ballot measures and election results. We add each one as soon as a public, reliable feed exists for it. Know a good source? Tell us.
Sources: U.S. Census Bureau Gazetteer (county list, public domain); USAspending.gov (U.S. Treasury). Built 2026-11-03 15:28.