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Petaluma Joint Union High School District, California

Petaluma Joint Union High School District is a secondary (high school) district in Sonoma County and Marin County, California, for grades 7–12. About 73,567 people live in it (2020–2024 estimate). It covers 245 sq mi (635 km²) of land.

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Petaluma Joint Union High School District in California
Petaluma Joint Union High School District and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
73,567 ± 1,106
Grades
7–12
Type
Secondary (high school) district
Counties
Sonoma County74% of the district’s landMarin County26% of the district’s land
Land area
245 sq mi (635 km²)
Median household income
$114,909 ± $6,007
Median home value
$919,700 ± $13,430
Water area
16.7 sq mi (43.4 km²)
State
California
Census code (GEOID)
0630250
Coordinates (central point)
38.198833, -122.634663
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 Petaluma Joint Union High School District, largest first

  1. Petaluma (city)59,247 people
  2. Penngrove (CDP)2,119 people
  3. Petaluma Center (CDP)763 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. Santa Rosa High School District18 mi north
  2. Tamalpais Union High School District18 mi south
  3. West Sonoma County Union High School District31 mi northwest

These share a boundary with Petaluma Joint 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 Petaluma 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.