| Official Zip Code Name | San Marcos |
| Zip Code State | California |
| Primary County: | San Diego |
| Area Code | 760/442 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 8 |
| Elevation Range | 776 ft. |
| Area | 18.471 Sqm. |
| Coordinates(Y,X) | 33.187084, -117.158477 |