Regional School District 18, Connecticut
Regional School District 18 is a unified school district in Lower Connecticut River Valley Planning Region, Connecticut, for grades Pre-K to 12. About 9,982 people live in it (2020–2024 estimate). It covers 54.8 sq mi (142 km²) of land.
- Population, 2020–2024 estimate
- 9,982 ± 331
- Grades
- Pre-K to 12
- Type
- Unified school district
- Land area
- 54.8 sq mi (142 km²)
- Median household income
- $132,263 ± $8,775
- Median home value
- $499,600 ± $30,977
- Water area
- 8.48 sq mi (22 km²)
- State
- Connecticut
- Census code (GEOID)
- 0903540
- Coordinates (central point)
- 41.362386, -72.323754
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 District 18, largest first
- Town of Old Lyme7,679 people
- Town of Lyme2,303 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
- East Lyme School District5.0 mi east
- Old Saybrook School District5.7 mi southwest
- East Haddam School District8.7 mi northwest
These share a boundary with Regional School District 18. 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 District 18 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.