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Sycamore Community Unit School District 427, Illinois

Sycamore Community Unit School District 427 is a unified school district in DeKalb County and Kane County, Illinois, for grades K–12. About 22,192 people live in it (2020–2024 estimate). It covers 81.9 sq mi (212 km²) of land.

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Sycamore Community Unit School District 427 in Illinois
Sycamore Community Unit School District 427 and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
22,192 ± 597
Grades
K–12
Type
Unified school district
Counties
DeKalb County93% of the district’s landKane County7% of the district’s land
Land area
81.9 sq mi (212 km²)
Median household income
$92,873 ± $8,709
Median home value
$287,800 ± $14,993
Water area
0.54 sq mi (1.41 km²)
State
Illinois
Census code (GEOID)
1738460
Coordinates (central point)
42.005253, -88.698074
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 Sycamore Community Unit School District 427, largest first

  1. Sycamore (city)18,559 people
  2. Sycamore Township14,846 people
  3. Cortland (town)4,564 people
  4. Mayfield Township851 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. Genoa-Kingston Community Unit School District 4247.1 mi north
  2. DeKalb Community Unit School District 4288.0 mi southwest
  3. Central Community Unit School District 30111 mi east
  4. Hiawatha Community Unit School District 42611 mi northwest
  5. Kaneland Community Unit School District 30214 mi southeast

These share a boundary with Sycamore Community Unit School District 427. 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 Sycamore Community Unit School District 427 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.