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Williamson County, Texas

Williamson County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF
Government Unit Unit Type Jurisdiction Role Contact / Address
GUS Population: 727,480 (2024)
ID: 175961
County Official County Government
Contact: ACCOUNTANT
710 S MAIN ST, STE 101, GEORGETOWN TX 78626-5701
GUS Population: 135,359 (2024)
ID: 135298
Municipal Municipal Government Within County
Contact: SENIOR PLANNER
301 W BAGDAD AVE, STE 210, ROUND ROCK TX 78664
GUS Population: 101,344 (2024)
ID: 194822
Municipal Municipal Government Within County
Contact: ASSISTANT CITY SECRETARY
PO BOX 409, GEORGETOWN TX 78627-0409
GUS Population: 87,511 (2024)
ID: 209638
Municipal Municipal Government Within County
Contact: GIS COORDINATOR
PO BOX 319, LEANDER TX 78646-0319
GUS Population: 78,380 (2024)
ID: 176426
Municipal Municipal Government Within County
Contact: MAYOR
600 N BELL BLVD, CEDAR PARK TX 78613-2216
GUS Population: 42,661 (2024)
ID: 113735
Municipal Municipal Government Within County
Contact: ASSISTANT CITY MANAGER
401 W FRONT ST, HUTTO TX 78634-4203
GUS Population: 17,872 (2024)
ID: 176424
Municipal Municipal Government Within County
Contact: CITY CLERK
400 PORTER ST, TAYLOR TX 76574-3600
GUS Population: 11,984 (2024)
ID: 135299
Municipal Municipal Government Within County
Contact: CITY SECRETARY
PO BOX 1920, LIBERTY HILL TX 78642-1920
GUS Population: 5,151 (2024)
ID: 213318
Municipal Municipal Government Within County
Contact: CITY MANAGER
161 TOWN CENTER BLVD, JARRELL TX 76537-4003
CITY OF BARTLETT
GUS Population: 1,676 (2024)
ID: 176422
Municipal Municipal Government Within County
Contact: MAYOR
PO BOX H, BARTLETT TX 76511-0907
GUS Population: 1,211 (2024)
ID: 135297
Municipal Municipal Government Within County
Contact: MAYOR
PO BOX 430, FLORENCE TX 76527-0430
GUS Population: 1,209 (2024)
ID: 176423
Municipal Municipal Government Within County
Contact: CITY ADMINISTRATOR
PO BOX 367, GRANGER TX 76530-0367
TOWN OF THRALL
GUS Population: 873 (2024)
ID: 176425
Municipal Municipal Government Within County
Contact: CITY OF THRALL
PO BOX 346, THRALL TX 76578-0346
TOWN OF WEIR
GUS Population: 770 (2024)
ID: 113736
Municipal Municipal Government Within County
Contact: CITY SECRETARY
PO BOX 264, WEIR TX 78674-0264
CITY OF COUPLAND
GUS Population: 302 (2024)
ID: 244271
Municipal Municipal Government Within County
Contact: MAYOR
PO BOX 581, COUPLAND TX 78615