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ZIP code 78666
San Marcos, TX · Hays County
About ZIP code 78666
- ZIP code 78666 is in San Marcos, Hays County, Texas.
- About 88,583 people live in it, which is 177.8 people per square mile.
- It also reaches into Guadalupe County, Comal County and Caldwell County.
- Time zone: Central Standard Time.
- The middle of the ZIP code is at 29.883, -97.980.
A ZIP code is a mail delivery area, not a town border, and one ZIP code can cover parts of several towns. To check a single address, use the US Postal Service lookup.
San Marcos, TX
ZIP code 78666 is the post office name for San Marcos, TX. 70,897 people live in San Marcos. Typical household income is $51,281. A typical home costs $310,400.
- Stronger than most towns on: Diversity & community, Walkability and Airport access.
- Weaker than most towns on: Space and yard size, Housing affordability and Property taxes.
Nearby ZIP codes
- 78655 Martindale · 3,730 people
- 78656 Maxwell · 2,847 people
- 78670 Staples · 130 people
- 78640 Kyle · 77,531 people
- 78622 Fentress · 331 people
- 78130 New Braunfels · 104,009 people
- 78676 Wimberley · 15,822 people
- 78132 New Braunfels · 40,953 people
ZIP code list from SimpleMaps US Zips. Population is a US Census Bureau estimate. These are estimates, so check official sources before you decide.