School District · Illinois
O'Fallon Township High School District 203
📍 O Fallon, IL · St. Clair County · NCES LEAID 1729790
District Contact & Information
Source: NCES CCD 2024–25
📍
District Mailing Address
600 S Smiley St, O Fallon, IL 62269
🏷
NCES District ID (LEAID)
1729790
🏛
District Type
Public School District
Schools in O'Fallon Township High School District 203
1 school listed
Zip Codes Served by O'Fallon Township High School District 203
1 zip code
Frequently Asked Questions
What zip codes are in O'Fallon Township High School District 203?▼
O'Fallon Township High School District 203 serves 1 zip code: 62269. Zip codes and district boundaries do not line up exactly, so confirm your exact address with the district office before you rely on an assignment.
How is O'Fallon Township High School District 203 rated?▼
O'Fallon Township High School District 203 has an overall rating of 10 out of 10 (Excellent), based on the share of students proficient in reading and math on state assessments (IAR 2023–24). That places it in the 94th percentile among Illinois school districts. Ratings are percentile-ranked within Illinois only and are not comparable across states.
How many students attend O'Fallon Township High School District 203?▼
The NCES Common Core of Data directory reports enrollment of 2,521 students across 1 school for O'Fallon Township High School District 203.
What grades does O'Fallon Township High School District 203 serve?▼
O'Fallon Township High School District 203 is listed in the NCES directory as serving grades 9th – 12th.
What schools are in O'Fallon Township High School District 203?▼
NCES lists 1 school operating under O'Fallon Township High School District 203: 1 high. Each school's grade span, enrollment and city are listed on this page. Attendance zones are set by the district and a school on this list is not necessarily the one your address is assigned to.
How do I contact O'Fallon Township High School District 203?▼
You can reach O'Fallon Township High School District 203 by phone at (618)632-3507 or online at www.oths.us or by mail at 600 S Smiley St, O Fallon, IL 62269. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About O'Fallon Township High School District 203
O'Fallon Township High School District 203 is a public school district serving 1 zip code in Illinois, primarily in St. Clair County. It carries an overall rating of 10/10 (Excellent), the 94th percentile among Illinois districts. That rating reflects the share of students proficient in reading and math on state assessments (IAR 2023–24) and is ranked only against other Illinois districts — scores are not comparable between states. Directory details on this page come from the NCES Common Core of Data, 2024–25.
Schools in this district
NCES lists 1 school operating under O'Fallon Township High School District 203 — 1 high. The largest by enrollment is O Fallon High School with 2,540 students. School-level enrollment comes from the NCES Common Core of Data school directory; a school with no reported enrollment is shown with a dash rather than a zero.
Checking your own address
District boundaries are address-specific and do not follow zip code lines exactly — a single zip code can
be split between two or more districts. Use the zip codes listed above as a starting point, then confirm your
assignment with the district office at (618)632-3507 before making a housing decision.