ZIP Code 78666: San Marcos, Texas
San Marcos, TX uses ZIP code 78666, which falls within Hays County, Texas. Its reference point is at latitude 29.8754 and longitude -97.9404 (29°52'31.4"N 97°56'25.4"W).
Location Overview of ZIP Code 78666
San Marcos, TX has 2 ZIP codes in our directory. Besides 78666, they include 78667.
Across Hays County there are 7 ZIP codes listed, and Texas has 2,742 in total.
The nearest listed ZIP code is 78655 in Martindale, TX, about 5.9 mi to the southeast.
| ZIP code | 78666 |
|---|---|
| City | San Marcos |
| County | Hays County |
| State | Texas (TX) |
| Latitude | 29.8754 |
| Longitude | -97.9404 |
| DMS | 29°52'31.4"N 97°56'25.4"W |
| Nearest ZIP | 78655 (Martindale, 5.9 mi) |
Map of ZIP Code 78666
Map centered on 29.8754, -97.9404. The pin marks the ZIP code's reference point, not its boundary.
Photos of San Marcos, TX
Video: San Marcos, TX
A nightlife tour of San Marcos, Texas (downtown) — by David Bridwell Music · Watch on YouTube
ZIP Codes Near 78666
These 15 ZIP codes have the closest reference points to 78666, measured in a straight line.
Nearby Cities and Towns
The closest communities to ZIP code 78666, measured in a straight line from its reference point, are Martindale, TX (5.9 mi southeast), Maxwell, TX (7.7 mi east) and Staples, TX (10 mi southeast). Distances are approximate and road distances will be longer.
- Martindale, TX – 5.9 mi southeast
- Maxwell, TX – 7.7 mi east
- Staples, TX – 10 mi southeast
- Kyle, TX – 11 mi northeast
- Fentress, TX – 13 mi southeast
- New Braunfels, TX – 13 mi southwest
- Wimberley, TX – 15 mi northwest
- Kingsbury, TX – 15 mi southeast
- Prairie Lea, TX – 16 mi southeast
- Lockhart, TX – 16 mi east
Schools Near San Marcos, TX
Public school assignments in the United States are based on street address, so families in ZIP code 78666 should confirm their assigned school with the school district that serves San Marcos and Hays County.
Searching nearby communities such as Martindale and Maxwell can widen the list of public, private and charter options. The links below open live Google Maps results centered on 78666.
Parks and Outdoor Recreation
Parks, trails and playgrounds around San Marcos, TX are easiest to find on the map above or with the searches below, which are centered on ZIP code 78666.
Hospitals and Healthcare
Hospitals, urgent care clinics and pharmacies serving San Marcos, TX can be found with the searches below. In a medical emergency, call 911.
Residents of ZIP code 78666 may also use facilities in nearby Martindale, Maxwell and Staples.
Shopping and Dining in San Marcos
Restaurants, grocery stores and shopping centers in and around ZIP code 78666 are listed in the Google Maps searches below, with current hours and reviews.
Libraries and Historical Places
Public libraries, museums and historic sites near San Marcos, Texas can be found with the searches below, which are centered on ZIP code 78666.
To research local history, try searching for Hays County records and archives along with the name San Marcos.
Roads, Rivers and Lakes
From ZIP code 78666, Martindale lies about 5.9 mi to the southeast, Maxwell lies about 7.7 mi to the east, Staples lies about 10 mi to the southeast, Kyle lies about 11 mi to the northeast and Fentress lies about 13 mi to the southeast. Use the directions link for turn-by-turn routes and road names.
Rivers, lakes and other water features near San Marcos show up on the map above, or you can search for them directly.
Frequently Asked Questions About ZIP Code 78666
Photo & Video Credits
- Photo 1 (“Hays courthouse”): Larry D. Moore, CC BY 4.0, via Wikimedia Commons.
- Photo 2 (“Big-claw river shrimp (Macrobrachium carcinus) (3682940827)”): Clinton & Charles Robertson from RAF Lakenheath, UK & San Marcos, TX, USA & UK, CC BY 2.0, via Wikimedia Commons.
- Photo 3 (“Wesley Chapel Historical Marker San Marcos Texas”): Larry D. Moore, CC BY 4.0, via Wikimedia Commons.
- Photo 4 (“The Calaboose Historical Marker San Marcos Texas”): Larry D. Moore, CC BY 4.0, via Wikimedia Commons.
- Photo 5 (“Ulysses Cephas Historical Marker San Marcos Texas”): Larry D. Moore, Public domain, via Wikimedia Commons.
- Video: “A nightlife tour of San Marcos, Texas (downtown)” by David Bridwell Music, embedded from YouTube. All rights belong to the creator.
Photos are shown from their original source under the licenses listed. They were taken near this ZIP code's reference point and may show neighboring areas.
Data for ZIP code 78666 comes from a public U.S. postal code dataset and is provided for general reference. Always confirm mailing details with the U.S. Postal Service.