School districts in Illinois
Illinois splits the two grade bands between separate districts over a large part of the state: 36% of its homes sit under an elementary district that stops before high school, with a separate secondary district taking over from there. That is why 458 of its 1,394 ZIP Code areas return a different set of districts for grade school than for high school. In 60411 (Chicago Heights), the most divided of them, Chicago Heights School District 170 leads the elementary answer and Bloom Township High School District 206 leads the high school one. The two districts that share the most ZIP Codes here are Township High School District 211 and Schaumburg Community Consolidated School District 54, in 10 of them.
How many school districts are in Illinois?
862: the Census boundary file draws 862 school districts in Illinois that reach at least one ZIP Code area with homes, 386 unified, 371 elementary and 105 secondary. A ZIP Code here can sit in more than one of them, which is why a school district lookup by ZIP Code for Illinois lists them all: find your school district by ZIP code.
Two districts at one address
Illinois keeps 105 separate secondary districts — districts that pick students up partway through and run to the end of high school, over several elementary districts at once. Where one of those sits, an address has two district names and neither is wrong.
- ZIP Code areas with a district1,394
- Served by more than one district1,034 (74%)
- Grade school and high school differ458 (33%)
- No high school district named2
- Unified districts386
- Elementary districts371
- Secondary districts105
- Homes in no district at all0
District pages for Illinois, largest first
Chicago Public School District 299 is the largest of them by far: at 1,262,604 homes it holds at least 19 times as many as Glenbard Township High School District 87, second on this list with 64,318. It reaches 65 ZIP Code areas, and the areas it covers alone are counted on its own page rather than assumed from its size.
- Chicago Public School District 2991,262,604 homes · 65 ZIP areas
- Glenbard Township High School District 8764,318 homes · 11 ZIP areas
- Springfield School District 18656,680 homes · 9 ZIP areas
- Community High School District 9948,154 homes · 11 ZIP areas
- Bremen Community High School District 22835,997 homes · 12 ZIP areas
- Valley View Community Unit School District 365U31,067 homes · 8 ZIP areas
- Hinsdale Township High School District 8630,954 homes · 9 ZIP areas
The most divided ZIP Code area in Illinois
ZIP Code area 60411 is the most divided in Illinois: 13 districts reach into its 20,910 homes, led for the early grades by Chicago Heights School District 170 and Community Consolidated School District 168. No single name describes this postal code, and no lookup that gives one is telling the whole truth about it.
Each percentage here is a share of the 20,910 homes counted in ZIP Code 60411, not the chance that any one address is in that district. Enrollment follows the street: two houses on opposite sides of the same road can be in different districts, and only the district office can say which.
Every track below is 35 cells long and stands for all 20,910 homes counted in ZIP Code 60411, so one cell is 597 homes, rounded to the nearest whole cell. Cells lit solid are the homes one district holds, and the unlit cells are the homes held by the other districts in the same list.
- Chicago Heights School District 1708,656 of 20,910 homes41%
- Community Consolidated School District 1683,622 of 20,910 homes17%
- Sunnybrook School District 1712,297 of 20,910 homes11%
- Flossmoor School District 1611,601 of 20,910 homes7.7%
- Sandridge School District 1721,599 of 20,910 homes7.6%
- Steger School District 1941,091 of 20,910 homes5.2%
- Brookwood School District 167955 of 20,910 homes4.6%
- Ford Heights School District 169690 of 20,910 homes3.3%
- Park Forest School District 163399 of 20,910 homes1.9%
For grade school, an answer of one district name would be wrong for 12,254 of the 20,910 here.
How much of Illinois a single district name misses
Across the 1,394 ZIP Code areas in Illinois with homes in them, an answer of one district name misses 837,874 of the 5,426,396 homes they hold — 15% of the state. In 338 of those areas the largest district for the early grades holds every home counted; in the other 1,056 it leaves some out. That is a different count from the 1,034 areas served by more than one district: it also counts districts under half a percent of the homes and homes in no district, and it does not count a high school district that differs.
ZIP Code 60056 · Mount Prospect, Illinois names 7 districts. Community Consolidated School District 59 is the largest of them for grade school, and an answer of its name alone misses 14,201 of the 22,975 homes there; for grade school the rest is 14,201 homes with Mount Prospect School District 57, River Trails School District 26, Prospect Heights School District 23 and 2 more districts.
ZIP Code 60411 · Chicago Heights, Illinois names 13 districts. Chicago Heights School District 170 is the largest of them for grade school, and an answer of its name alone misses 12,254 of the 20,910 homes there; for grade school the rest is 12,254 homes with Community Consolidated School District 168, Sunnybrook School District 171, Flossmoor School District 161 and 5 more districts.
ZIP Code 60402 · Berwyn, Illinois names 4 districts. Berwyn South School District 100 is the largest of them for grade school, and an answer of its name alone misses 12,195 of the 23,665 homes there; for grade school the rest is 12,195 homes with Berwyn North School District 98 and Lyons School District 103.
Where a ZIP Code here names more than one district
Of the 1,394 ZIP Code areas in Illinois that the federal file names a district for, 1,034 name more than one school district. These are the 12 with the most, starting at 13 districts in one postal area: Chicago Heights, Mount Vernon and Centralia. Each row opens the full answer for that ZIP Code, with every district named for grade school and for high school and the share of the homes each one holds.
- ZIP Code 60411 · Chicago Heights, Illinois13 districts · 20,910 homes · two bands, two answers
- ZIP Code 62864 · Mount Vernon, Illinois13 districts · 11,152 homes · two bands, two answers
- ZIP Code 62801 · Centralia, Illinois12 districts · 9,240 homes · two bands, two answers
- ZIP Code 60046 · Lake Villa, Illinois10 districts · 12,977 homes · two bands, two answers
- ZIP Code 60523 · Oak Brook, Illinois10 districts · 4,781 homes · two bands, two answers
- ZIP Code 62830 · Dix, Illinois10 districts · 665 homes · two bands, two answers
- ZIP Code 60025 · Glenview, Illinois9 districts · 16,227 homes · two bands, two answers
- ZIP Code 60062 · Northbrook, Illinois9 districts · 17,583 homes · two bands, two answers
- ZIP Code 60073 · Round Lake, Illinois9 districts · 20,095 homes · two bands, two answers
- ZIP Code 60015 · Deerfield, Illinois9 districts · 10,461 homes · two bands, two answers
- ZIP Code 60424 · Gardner, Illinois9 districts · 960 homes · two bands, two answers
- ZIP Code 60450 · Morris, Illinois9 districts · 9,062 homes · two bands, two answers
What to do next
Ask the district office to confirm your street address: look on its site for a school locator, a find my school tool or an attendance zone map, or call the office.
A ZIP Code is a set of mail delivery routes, not a boundary: 1,034 of the 1,394 ZIP Code areas in Illinois with a district named for them are served by more than one school district, and the line between two of them runs along streets. Only the district can say which side of that line an address is on.
District websites and phone numbers here come from the NCES Common Core of Data directory, 2024-25 school year, filed under the same district ID as the Census boundary files. Where it lists no usable website, none is printed rather than guessed.
If a house purchase depends on the answer, ask the district itself for written confirmation of that exact address. A listing is not a district record, and neither is this page.
Where these numbers come from
The homes were counted in the 2020 Census and the district lines are the 2026 boundary file, so a fast-growing area may have changed since; ZIP Codes here are the Census Bureau's ZIP Code Tabulation Areas; a share is a share of homes, not the chance that one address is in a district; and a district is not a school attendance zone. Every source, file and caveat is on the method page.