U.S. PLACE PROFILE
San Marcos, CA
San Marcos is a City in San Diego County, California. The loaded 2025 population estimate is 94,908.
Published locationCalifornia
Population estimate94,9082025 loaded Census estimate
CountySan Diego CountyPrimary loaded county
Place typeCityCensus place classification
Coordinates33.13257, -117.16989Census representative point
EXPLORE FROM SAN MARCOS
Distance and nearby-place tools
Only tools with enough qualifying stored data are linked below.
Closest published places
Nearest qualifying Census places by straight-line distance.
County coverage
Some incorporated places cross county lines. These county-part values come from the loaded Census county-place-part population layer.
| County | 2025 population in this place part |
|---|---|
| San Diego County | 94,908 |
DATA COVERAGE
What is available for San Marcos
Geographic identityNearby placesPopulation estimate100-mile radius25-mile radius50-mile radius
PRIMARY GEOGRAPHIC SOURCE
U.S. Census Bureau
Place identity, coordinates and geographic identifiers are tied to the loaded Census source record for this location.