San Marcos Unified School District, California
San Marcos Unified School District is a unified school district in San Diego County, California, for grades K–12. About 127,375 people live in it (2020–2024 estimate). It covers 41.6 sq mi (108 km²) of land.
- Population, 2020–2024 estimate
- 127,375 ± 2,028
- Grades
- K–12
- Type
- Unified school district
- County
- San Diego County
- Land area
- 41.6 sq mi (108 km²)
- Median household income
- $112,358 ± $5,801
- Median home value
- $895,200 ± $19,982
- Water area
- 0.12 sq mi (0.32 km²)
- State
- California
- Census code (GEOID)
- 0634880
- Coordinates (central point)
- 33.143710, -117.179712
These coordinates mark a central point for the district, not a school or an address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.
Towns, townships and communities in San Marcos Unified School District, largest first
- San Marcos (city)94,882 people
- Lake San Marcos (CDP)4,693 people
A town, township, city or borough is listed when at least half its land is in the district; a community, when its central point is. Near a district line, an address can belong to the district next door.
Bordering unified school districts, nearest first
- Vista Unified School District5.4 mi northwest
- Carlsbad Unified School District8.4 mi west
- Bonsall Unified School District12 mi north
These share a boundary with San Marcos Unified School District. Distances are straight lines between central points.
Before using this answer for enrollment
A district boundary doesn’t decide which school a student attends; the district’s attendance zones and rules do. Confirm the full address and grade with San Marcos Unified School District before you rely on it.
See its schools and enrollment on NCES ↗
Find the school district where you are now or find your town or township.