US ZIP Code Map

City

San Marcos, TX ZIP codes

5 ZIPs, including 78666, 78667 as primary city.

ACS population

167,446

Median household income

$67,620

Median home value

$245,225

Map of San Marcos

ZIP code map

ZIP share of this city

Population share

ZIP codes in San Marcos

ZIPCityCountyPopulationIncome
78640KyleHays County71,460$88,533
78655MartindaleCaldwell County3,687$48,409
78656MaxwellCaldwell County2,953$78,058
78666San MarcosHays County87,775$55,478
78667San MarcosHays County1,571—