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Williamson County ZIP Codes

List of ZIP Codes in Williamson County

The following table lists ZIP Codes associated with Williamson County, Texas, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.


S.N. Zip Code Latitude Longitude City Population Density
1 76527 30.8379 -97.79531 Florence 4,686 15.1
2 76530 30.71357 -97.42434 Granger 2,704 11.3
3 76537 30.81779 -97.60645 Jarrell 12,526 90.1
4 76573 30.81864 -97.50226 Schwertner 22 9.6
5 76574 30.58297 -97.38967 Taylor 19,746 51.2
6 76578 30.53488 -97.24092 Thrall 1,561 9.2
7 78613 30.50683 -97.81939 Cedar Park 89,162 1243.1
8 78615 30.46426 -97.39061 Coupland 1,540 10.9
9 78626 30.66664 -97.59878 Georgetown 45,020 196.2
10 78628 30.63981 -97.74636 Georgetown 44,821 267.4
11 78633 30.73803 -97.75465 Georgetown 28,877 142.1
12 78634 30.56 -97.54404 Hutto 43,466 297.7
13 78642 30.6946 -97.94087 Liberty Hill 24,146 83.9
14 78664 30.50461 -97.64583 Round Rock 62,272 1447.3
15 78665 30.55038 -97.63681 Round Rock 64,087 1027.7
16 78674 30.67213 -97.59653 Weir 195 210.5
17 78681 30.5355 -97.71981 Round Rock 58,531 974.6
18 78717 30.48988 -97.75393 Austin 36,085 1068.1
19 78729 30.45738 -97.75516 Austin 30,440 1197.8


About Williamson County ZIP Codes

Williamson County in Texas (TX) is served by approximately 19 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 569,887 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in Williamson County are located in cities such as Round Rock, Georgetown, Cedar Park, Austin, Hutto. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in Williamson County, Texas follow the America/Chicago time zone.

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