ZIP Code 5 78667 SAN MARCOS, TX Texas United States ZIP Code 5 Plus 4 ️
ZIP Code 5 78667 SAN MARCOS, TX Texas United States ZIP Code 5 Plus 4 ️ . April, october and november are the most pleasant months in. This postal code encompasses addresses in the city of san marcos, tx. Texas State San Marcos Map Zip Code Map from zipcodemaps.blogspot.com 2,739 zip code population in 2000: 2016 cost of living index in. This postal code encompasses addresses in the city of san marcos, tx.