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Tri-City Community Unit School District 1, Illinois

Tri-City Community Unit School District 1 is a unified school district in Sangamon County, Illinois, for grades K–12. About 3,586 people live in it (2020–2024 estimate). It covers 99.2 sq mi (257 km²) of land.

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Tri-City Community Unit School District 1 in Illinois
Sangamon Valley Community Unit School District 9Williamsville Community Unit School District 15
Tri-City Community Unit School District 1 and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
3,586 ± 438
Grades
K–12
Type
Unified school district
County
Sangamon County
Land area
99.2 sq mi (257 km²)
Median household income
$88,021 ± $11,364
Median home value
$196,500 ± $25,080
Water area
0.3 sq mi (0.77 km²)
State
Illinois
Census code (GEOID)
1739450
Coordinates (central point)
39.835263, -89.421300
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 Tri-City Community Unit School District 1, largest first

  1. Mechanicsburg Township2,301 people
  2. Mechanicsburg (village)728 people
  3. Dawson (village)536 people
  4. Buffalo (village)482 people
  5. Buffalo Hart Township156 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. Riverton Community Unit School District 147.6 mi west
  2. Rochester Community Unit School District 3A7.7 mi southwest
  3. Williamsville Community Unit School District 159.4 mi northwest
  4. Sangamon Valley Community Unit School District 912 mi east
  5. Mount Pulaski Community Unit District 2312 mi northeast
  6. Taylorville Community Unit School District 318 mi southeast

These share a boundary with Tri-City Community Unit School District 1. 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 Tri-City Community Unit School District 1 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.