San Marcos zipcode
| City | San Marcos |
| ZIP Code | 92078 |
| Type | Standard |
| State Code | CA |
| State | California |
ZIP code of San Marcos is 92078. This place is located in California state in US. To send any postal service to San Marcos, you must use 92078 zipcode.
The ZIP code 92078 is also used with 1 more city name of California.
- Elfin Forest, CA