Williamson County, Texas

Browse all ZIP codes in Williamson County, Texas. Each ZIP code page includes population, median household income, and a map of the area.

County Statistics

Total Population 637,305
Median Household Income $95,876
Median Age 38.1
Unemployment Rate 3.9%
Poverty Rate 6.2%
ZIP Codes 21

Largest ZIP Codes in Williamson County

ZIP Code City Population Median Income
78613Cedar Park88,189$116,893
78641Leander87,106$124,614
78664Round Rock62,168$83,599
78665Round Rock61,640$113,365
78681Round Rock57,760$123,948

Demographics

Race & Ethnicity

Gender

Education Level (adults 25+)

All ZIP Codes in Williamson County