San Marcos, TX ZIP Codes
1
Total ZIPs
63,836
Total Population
ZIP Codes in San Marcos, TX
| ZIP Code | Population | Density | Timezone |
|---|---|---|---|
| 78666 | 63,836 | 140 | America/Chicago |
All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.