Mercer Island School District, Washington
Mercer Island School District is a unified school district in King County, Washington, for grades Pre-K to 12. About 25,307 people live in it (2020–2024 estimate). It covers 6.38 sq mi (16.5 km²) of land.
- Population, 2020–2024 estimate
- 25,307 ± 32
- Grades
- Pre-K to 12
- Type
- Unified school district
- County
- King County
- Land area
- 6.38 sq mi (16.5 km²)
- Median household income
- $219,069 ± $17,476
- Median home value
- $2,000,000 or more
- Water area
- 7.23 sq mi (18.7 km²)
- State
- Washington
- Census code (GEOID)
- 5304980
- Coordinates (central point)
- 47.565819, -122.229838
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 Mercer Island School District, largest first
- Mercer Island (city)25,307 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
- Bellevue School District4.0 mi northeast
- Renton School District5.9 mi south
- Seattle Public Schools6.8 mi northwest
These share a boundary with Mercer Island 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 Mercer Island School District before you rely on it.
See its schools and enrollment on NCES ↗
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