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Marissa Community Unit School District 40, Illinois

Marissa Community Unit School District 40 is a unified school district in St. Clair County and Washington County, Illinois, for grades Pre-K to 12. About 2,354 people live in it (2020–2024 estimate). It covers 59.2 sq mi (153 km²) of land.

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Marissa Community Unit School District 40 in Illinois
Marissa Community Unit School District 40 and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
2,354 ± 326
Grades
Pre-K to 12
Type
Unified school district
Counties
St. Clair County77% of the district’s landWashington County23% of the district’s land
Land area
59.2 sq mi (153 km²)
Median household income
$73,281 ± $20,625
Median home value
$118,300 ± $30,664
Water area
1.56 sq mi (4.04 km²)
State
Illinois
Census code (GEOID)
1724650
Coordinates (central point)
38.264548, -89.740466
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 Marissa Community Unit School District 40, largest first

  1. Marissa Township1,835 people
  2. Marissa (village)1,232 people
  3. Lenzburg (village)428 people
  4. Darmstadt (CDP)18 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

  1. New Athens Community Unit School District 608.5 mi northwest
  2. Coulterville Unit School District 19.0 mi southeast
  3. Sparta Community Unit School District 14011 mi south
  4. West Washington County Community Unit District 1011 mi northeast
  5. Red Bud Community Unit School District 13215 mi southwest

These share a boundary with Marissa Community Unit School District 40. 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 Marissa Community Unit School District 40 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.