San Marcos, Texas ZIP Code - United States

The location San Marcos, TX has 2 differents ZIP Codes. Check the map below to check your ZIP Code.

	City Name	ZIP Code	ZIP Type	Estimated Population
San Marcos, TX	PRIMARY	78666	STANDARD	35.271
San Marcos, TX	PRIMARY	78667	PO BOX	1.475

Postal Zone of San Marcos, TX - USA

San Marcos, TX belongs to Hays county. Check the list of Hays county ZIP Code.

Check the list of Texas ZIP Code.

If you want to restart your search by state, get back to US ZIP Code.

PRIMARY: means an the primary city name. Official city name, although the city name might also have another acceptable name.
ACCEPTABLE: means an adequate city name. City names that are abbreviated will frequently be listed as unacceptable because abbreviations are not an acceptable city name format.
IMPROPER/NOT ACCEPTABLE: Means an inadequate city name has been entered or received based on information entered.
UNIQUE: Assigned to a company, government agency, or entity with sufficient mail volume, based on average daily volume of letter size mail received, availability of ZIP Code numbers in the postal area, and the US mail service cost-benefit analysis.