FREE ZIP Code Finder
Enter ZIP Code:

*Find Info on any U.S. ZIP Code
Find ZIP+4 of Address

*Find the ZIP Code, county, and +4 of any U.S. Address
Other FREE Lookups
Area Code:

*Lookup ZIP Code of any city, state, county or area code
FREE Radius Search
Find all ZIP Codes

of ZIP Code:

» Download the FREE Radius Finder Application

FREE Distance Calc
Calculate the distance between two U.S. or Canadian ZIP codes.

Start ZIP:
End ZIP:

ZIP Codes for City of San Marcos, TX

Timezone(s):Central (GMT -06:00)
Counties:HAYS, TX
Population:44,894 (More Details)
Male Population:22,305
Female Population:22,589
Median Age:23
ZIP Codes:2
Area Codes:1
Total Area:680 square miles (county)
Land Area:678 square miles (county)
Water Area:2 square miles (county)

San Marcos, TX Covers 2 ZIP Codes

ZIP Code Type County Population Area Code(s)
ZIP Code 78666 Standard Hays 63,836 512
ZIP Code 78667 P.O. Box Hays 0 512

San Marcos, TX Demographic Information *

Browse homes for sale in SAN MARCOS Trulia Logo. Your Home for Real Estate.
Total population 44,894
Male population 22,305
Female population 22,589
Median age (years) 23.1
White Population 35,221
Black Population 2,465
Indian Population 383
Asian Population 697
Hawaiian Population 55
Hispanic Population 16,967
Median age (Male) 23.5
Median age (Female) 22.7
Total households 17,031
Family households (families) 6,485
Average household size 2.27
Average family size 3.03
Total housing units 18,179
* Demographic data is based on 2010 Census.

San Marcos, TX Other Information

43 Cities within 30 miles of San Marcos, TX Products