ZIP Code 62226 · Swansea, Illinois
St. Clair County · 14,137 counted · 7 districts
Each percentage here is a share of the 14,137 homes counted in ZIP Code 62226, 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.
The districts named for the early grades in ZIP Code 62226, Swansea, Illinois are not the districts named for high school, and the set changes in both directions: 2 districts arrive for high school that no elementary answer names, and 5 run the early grades and stop. 7 districts hold the 14,137 homes counted here between them, and Belleville Township High School District 201 is the largest by homes. The largest share is high enough that one name is right for most of the homes counted and wrong for the other 184: 184 homes with O'Fallon Township High School District 203.
The early grades are divided many ways
5 districts hold a measurable share of ZIP Code 62226 at this level. Belleville School District 118 is the largest with 8,224 homes; the smallest of them holds 184 homes. Belleville School District 118, Wolf Branch School District 113, High Mount School District 116 and 2 more districts are named here for grade school and not for high school.
Every track below is 35 cells long and stands for all 14,137 homes counted in ZIP Code 62226, so one cell is 404 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.
- Belleville School District 1188,224 of 14,137 homes58%
- Wolf Branch School District 1133,210 of 14,137 homes23%
- High Mount School District 1161,955 of 14,137 homes14%
- Whiteside School District 115508 of 14,137 homes3.6%
- Central School District 104184 of 14,137 homes1.3%
Below half a percent at the grade school level: Millstadt Consolidated Community School District 160 and Harmony Emge School District 175 hold 56 homes between them, which is why they are counted under the list rather than inside it. A lookup that named them alongside the districts above would be listing a boundary crossing rather than an answer.
High school is split between two districts
2 districts hold a measurable share of ZIP Code 62226 at this level. Belleville Township High School District 201 is the largest with 13,953 homes; the smallest of them holds 184 homes. Belleville Township High School District 201 and O'Fallon Township High School District 203 are named here for high school and not for the early grades.
- Belleville Township High School District 20113,953 of 14,137 homes99%
- O'Fallon Township High School District 203184 of 14,137 homes1.3%
Have a street address?
A ZIP Code names every district that can serve the area; a street address settles which one serves a home. The Census Bureau geocoder takes an exact address and returns its school districts from the current boundary files, free and with no account.
Check an exact address with the Census Geocoder
Then confirm it with the district office. Each district named here, with its NCES district ID, website and phone:
- Belleville Township High School District 201 NCES ID 1705640 bths201.org (618) 222-8241
- Belleville School District 118 NCES ID 1705610 belleville118.org (618) 233-2830
- Wolf Branch School District 113 NCES ID 1742960 wbsd113.org (618) 277-2100
- High Mount School District 116 NCES ID 1718960 highmountschool.com (618) 233-1054
- Whiteside School District 115 NCES ID 1742300 wssd115.org (618) 239-0000
- Central School District 104 NCES ID 1709170 central104.org (618) 632-6336
- O'Fallon Township High School District 203 NCES ID 1729790 oths.us (618) 632-3507
The set of names changes in both directions
Belleville Township High School District 201 and O'Fallon Township High School District 203 are named for high school here and for no elementary grades, and Belleville School District 118, Wolf Branch School District 113, High Mount School District 116 and 2 more districts run the early grades and no more. An address on the wrong street can therefore change district at the change of grade and land in a district that was never part of its elementary answer, while a neighbor two blocks away keeps one name the whole way through.
What one district name costs in 62226
A lookup that answers ZIP Code 62226 with one district name has to pick one of the names below and drop the rest. Measured against the 14,137 homes counted here, for the early grades it is wrong for 5,913 homes and for high school it is wrong for 184 homes. That is the whole difference between this page and a one-line answer: the same federal file, read to the end instead of to the first row.
The districts that reach into 62226
The districts named above are not alike in size or in reach. Belleville Township High School District 201 touches 15 ZIP Code areas in all and holds 13,953 homes inside this one; High Mount School District 116 touches 1 area. Not one of them is ever the only district in a ZIP Code area anywhere in the country: every postal area they touch, they share with somebody.
- Belleville Township High School District 20113,953 of 14,137 here · 15 ZIP areas in all
- Belleville School District 1188,224 of 14,137 here · 6 ZIP areas in all
- Wolf Branch School District 1133,210 of 14,137 here · 2 ZIP areas in all
- High Mount School District 1161,955 of 14,137 here · 1 ZIP area in all
- Whiteside School District 115508 of 14,137 here · 3 ZIP areas in all
- Central School District 104184 of 14,137 here · 4 ZIP areas in all
- O'Fallon Township High School District 203184 of 14,137 here · 8 ZIP areas in all
Where Belleville School District 118 goes from here
Belleville School District 118 runs pre-K through grade 8, and it shares 4 of the 6 ZIP Code areas it touches with neighbors, holds under half a percent of the homes in the remaining 2, and is the only district in none of them. Inside its own boundary it holds 18,378 homes over 25 square miles; the part of it counted in ZIP Code 62226 is 8,224 of those. The district it shares the most postal ground with is Belleville Township High School District 201, across 4 ZIP Code areas. Its thinnest measured foothold is elsewhere: in ZIP Code area 62223 it holds 534 of 7,913 homes, or 6.7% of them.
How 62226 compares in Illinois
Across Illinois the boundary file names more than one district in 1,034 of the 1,394 ZIP Code areas it names a district for, 74% of them, and 2 areas in the state have no high school district named for part of their homes. Counting the districts named at either level, 34 areas in Illinois name more than this ZIP Code does and 1,326 name fewer. Nationally more than one district is named in 53% of 33,555 areas.
Look up 62226 again, or look up another ZIP Code
The lookup holds every ZIP Code area in the country with homes in it, including the ones with no page of their own. Opening it at 62226 recomputes the same 14,137 homes from the same snapshot, and typing five other digits answers for somewhere else. No server is asked for the answer: the whole index travels with the lookup page itself.
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: 184 of the 14,137 homes counted in 62226 sit outside the district holding the most of them, and the line between the two runs along streets rather than around the postal area.
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.
What this site can hand you instead:
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.