Tamalpais Union High School District, California
Tamalpais Union High School District is a secondary (high school) district in Marin County, California, for grades 9–12. About 119,502 people live in it (2020–2024 estimate). It covers 168 sq mi (435 km²) of land.
- Population, 2020–2024 estimate
- 119,502 ± 1,458
- Grades
- 9–12
- Type
- Secondary (high school) district
- County
- Marin County
- Land area
- 168 sq mi (435 km²)
- Median household income
- $190,275 ± $7,872
- Median home value
- $1,909,900 ± $63,481
- Water area
- 123 sq mi (320 km²)
- State
- California
- Census code (GEOID)
- 0638790
- Coordinates (central point)
- 37.936504, -122.673764
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 Tamalpais Union High School District, largest first
- Mill Valley (city)14,012 people
- Larkspur (city)12,854 people
- San Anselmo (town)12,679 people
- Tamalpais-Homestead Valley (CDP)12,085 people
- Corte Madera (town)10,077 people
- Tiburon (town)9,012 people
- Fairfax (town)7,516 people
- Sausalito (city)7,141 people
- Kentfield (CDP)6,900 people
- Strawberry (CDP)5,830 people
- Marin City (CDP)3,195 people
- Sleepy Hollow (CDP)3,063 people
All 22
- Ross (town)2,606 people
- Belvedere (city)2,345 people
- Woodacre (CDP)1,627 people
- Lagunitas-Forest Knolls (CDP)1,626 people
- Bolinas (CDP)1,334 people
- Alto (CDP)1,024 people
- San Geronimo (CDP)583 people
- Muir Beach (CDP)311 people
- Stinson Beach (CDP)255 people
- Nicasio (CDP)91 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
- San Rafael City High School District10 mi northeast
- Petaluma Joint Union High School District18 mi north
These share a boundary with Tamalpais 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 Tamalpais 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.