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Mount Diablo Unified School District, California

Mount Diablo Unified School District is a unified school district in Contra Costa County, California, for grades K–12. About 262,655 people live in it (2020–2024 estimate). It covers 125 sq mi (323 km²) of land.

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Mount Diablo Unified School District in California
Antioch Unified School DistrictPittsburg Unified School District
Mount Diablo Unified School District and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
262,655 ± 3,400
Grades
K–12
Type
Unified school district
County
Contra Costa County
Land area
125 sq mi (323 km²)
Median household income
$123,747 ± $2,808
Median home value
$870,400 ± $9,805
Water area
5.94 sq mi (15.4 km²)
State
California
Census code (GEOID)
0626370
Coordinates (central point)
37.956400, -121.977444
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 Mount Diablo Unified School District, largest first

  1. Concord (city)124,035 people
  2. Pleasant Hill (city)34,235 people
  3. Bay Point (CDP)24,231 people
  4. Clayton (city)10,937 people
  5. Pacheco (CDP)4,325 people
  6. North Gate (CDP)806 people
  7. Shell Ridge (CDP)746 people
  8. Clyde (CDP)653 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

  1. Pittsburg Unified School District5.8 mi northeast
  2. Antioch Unified School District9.4 mi east
  3. Martinez Unified School District9.8 mi west
  4. San Ramon Valley Unified School District11 mi south
  5. Fairfield-Suisun Unified School District18 mi north
  6. Livermore Valley Joint Unified School District28 mi southeast

These share a boundary with Mount Diablo 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 Mount Diablo 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.