Texas Gazetteer > Texas ZIP Codes > County ZIP Codes > Williamson ZIP Codes

ZIP Codes in Williamson County with Associated Cities & Towns

Andice   78628
Austin   78717
Austin   78729
Cedar Park   78613
Cedar Park   78630
Coupland   78615
Florence   76527
Georgetown   78626
Georgetown   78627
Georgetown   78628
 Georgetown   78633
Granger   76530
Hutto   78634
Jarrell   76537
Leander   78641
Leander   78646
Liberty Hill   78642
Round Rock   78664
Round Rock   78665
Round Rock   78680
 Round Rock   78681
Round Rock   78682
Round Rock   78683
Schwertner   76573
Sun City   78628
Taylor   76574
Thrall   76578
Volente   78641
Walburg   78673
Weir   78674

ZIP Codes - Key Concepts

  1. ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
  2. The centroid of a ZIP Code may be in one County and the associated city/town in another.
  3. In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
  4. ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
  5. ZIP Codes are only loosely tied to cities.