What County Is San Marcos, Texas In?
San Marcos is in Caldwell County, Guadalupe County, and Hays County. Check a specific address near a county line.
- Official code
- 4865600
- Representative coordinates
- 29.873610, -97.936725
- Land area
- 104.69 km²
- Water area
- 0.348 km²
- State
- Texas
The representative point identifies this area. It is not a street address or a boundary survey.
County boundaries in San Marcos
This place crosses county lines. A city name alone cannot identify the county for every address. Check a point on the county map.
Coordinates of San Marcos
29.873610, -97.936725 is the Census representative point, not a street address. Convert these coordinates or prepare a map link.
Elevation in San Marcos
174 m · 571 ft. GNIS archived height at its named reference point (29.8733862, -97.9354858), which may differ from the Census point. Terrain height varies across the place; this is not a city-wide or surveyed elevation. Request height at a different point.
Today’s sunrise and sunset
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Approximate calculations at the representative coordinates, using a level horizon. Terrain and weather can change what you see.
Time zones in San Marcos
The representative point uses America/Chicago.
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
A city boundary, a CDP and a mailing city can mean different things.
Find the county at your current point, check its ZIP area, or find its physical time zone.