Regional School Unit 21, Maine
Regional School Unit 21 is a unified school district in York County, Maine, for grades K–12. About 19,922 people live in it (2020–2024 estimate). It covers 79.5 sq mi (206 km²) of land.
- Population, 2020–2024 estimate
- 19,922 ± 31
- Grades
- K–12
- Type
- Unified school district
- County
- York County
- Land area
- 79.5 sq mi (206 km²)
- Median household income
- $104,877 ± $6,875
- Median home value
- $517,000 ± $40,938
- Water area
- 37.6 sq mi (97.3 km²)
- State
- Maine
- Census code (GEOID)
- 2314773
- Coordinates (central point)
- 43.384704, -70.496711
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 Regional School Unit 21, largest first
- Town of Kennebunk11,820 people
- Kennebunk (CDP)6,221 people
- Town of Arundel4,418 people
- Town of Kennebunkport3,684 people
- West Kennebunk (CDP)1,395 people
- Kennebunkport (CDP)1,276 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
- Biddeford6.4 mi northeast
- Wells-Ogunquit Community School District7.8 mi southwest
- Dayton Public Schools12 mi north
- Sanford13 mi west
- School Administrative District 5719 mi northwest
These share a boundary with Regional School Unit 21. 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 Regional School Unit 21 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.