Chaffey Joint Union High School District, California

Chaffey Joint Union High School District is a secondary (high school) district in San Bernardino County, California, for grades 9–12. About 427,797 people live in it (2020–2024 estimate). It covers 162 sq mi (420 km²) of land.

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Chaffey Joint Union High School District in California
Chaffey Joint Union High School District (simplified outline). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
427,797 ± 2,996
Grades
9–12
Type
Secondary (high school) district
County
San Bernardino County
Land area
162 sq mi (420 km²)
Median household income
$100,296 ± $2,592
Median home value
$657,000 ± $5,453
Water area
0.04 sq mi (0.1 km²)
State
California
Census code (GEOID)
0608160
Coordinates (central point)
34.138984, -117.581733

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 Chaffey Joint Union High School District, largest first

  1. Ontario (city)180,547 people
  2. Rancho Cucamonga (city)175,411 people
  3. Montclair (city)37,810 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.

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 Chaffey Joint 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.