San Marcos, TX ZIP Code
ZIP code, county, time zone and coordinates of San Marcos, Texas
The ZIP code of San Marcos, TX is 78666. It is in Hays County.
Mailing address format for San Marcos
John Smith 123 Main St SAN MARCOS TX 78666 USA
USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.
All ZIP codes in San Marcos
| ZIP code | Population | Area | |
|---|---|---|---|
| 78666 | — | 192.4 sq mi | Main |
ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.
Where is San Marcos? Location, county and time zone
- State
- Texas
- County
- Hays County
- GPS coordinates
- 29.87333, -97.93574
- Elevation
- 617 ft (188 m)
- Time zone
- America/ChicagoCST · UTC-06:00
- Population
- 67,553
Map of San Marcos, TX 78666
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San Marcos Street View
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San Marcos ZIP code: FAQ
What is the ZIP code for San Marcos, TX?
The main ZIP code for San Marcos, TX is 78666.
How many ZIP codes does San Marcos have?
San Marcos has 1 ZIP code.
What county is San Marcos, TX in?
San Marcos is in Hays County, Texas.
What time zone is San Marcos in?
San Marcos is in the America/Chicago time zone (CST, UTC-06:00 right now).
What are the coordinates of San Marcos?
Latitude 29.87333, longitude -97.93574.
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