Zip Code 78666 - San Marcos, Guadalupe, TX, United States
Zip Code 78666 Data
| Zip Code | 78666 |
|---|---|
| Area 1 (City, County) | San Marcos, Guadalupe |
| Area 2 (City, County) | San Marcos, Caldwell |
| Area 3 (City, County) | San Marcos, Hays |
| Area 4 (City, County) | San Marcos, Comal |
| State | Texas |
| State FIPS | 48 |
| Latitude | 29.878458 |
| Longitude | -98.020018 |
| Timezone | 6 |
| Daylight | Yes |
| Country | United States |