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Grossmont Union High School District, California

Grossmont Union High School District is a secondary (high school) district in San Diego County, California, for grades 9–12. About 485,323 people live in it (2020–2024 estimate). It covers 467 sq mi (1,211 km²) of land.

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Grossmont Union High School District in California
Sweetwater Union High School District
Grossmont Union High School District and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
485,323 ± 4,381
Grades
9–12
Type
Secondary (high school) district
County
San Diego County
Land area
467 sq mi (1,211 km²)
Median household income
$97,258 ± $1,923
Median home value
$753,100 ± $8,198
Water area
6.91 sq mi (17.9 km²)
State
California
Census code (GEOID)
0616230
Coordinates (central point)
32.773800, -116.818400
Check a point in the school district finder

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 Grossmont Union High School District, largest first

  1. El Cajon (city)104,449 people
  2. La Mesa (city)60,797 people
  3. Santee (city)59,332 people
  4. La Presa (CDP)34,962 people
  5. Spring Valley (CDP)31,969 people
  6. Lemon Grove (city)27,686 people
  7. Lakeside (CDP)22,447 people
  8. Winter Gardens (CDP)22,131 people
  9. Rancho San Diego (CDP)21,272 people
  10. Casa de Oro-Mount Helix (CDP)19,765 people
  11. Bostonia (CDP)16,765 people
  12. Alpine (CDP)15,180 people
All 17
  1. Jamul (CDP)6,574 people
  2. Eucalyptus Hills (CDP)5,840 people
  3. Harbison Canyon (CDP)4,328 people
  4. Granite Hills (CDP)3,795 people
  5. Crest (CDP)2,775 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 secondary (high school) districts, nearest first

  1. Sweetwater Union High School District15 mi southwest
  2. Julian Union High School District28 mi northeast

These share a boundary with Grossmont Union High 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 Grossmont Union High 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.