| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| United Community School District 304 | North Henderson | 5/10 Average · 46th pct | 945 | 4 | PK–12 | 1 |
| Sherrard Community Unit School District 200 | Matherville | 4/10 Below Average · 37th pct | 1,371 | 5 | PK–12 | 5 |
| Mercer County School District 404 | Aledo | 3/10 Below Average · 24th pct | 1,294 | 5 | PK–12 | 5 |
How Mercer County compares
Together they enroll 3,610 students across 14 schools. The largest is Sherrard Community Unit School District 200 with 1,371 students. Districts here average 4.0/10, below the Illinois average of 5.6/10. Ratings range from 3/10 to 5/10.
School Districts in Mercer County, Illinois
Mercer County has 3 public school districts covering 11 zip codes. The top-rated district in Mercer County is United Community School District 304 (5/10). Ratings are based on the share of students proficient in reading and math on state assessments (IAR 2023–24), ranked against all districts in Illinois. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.
Frequently Asked Questions
How many school districts are in Mercer County, IL?
3 school districts serve zip codes in Mercer County, IL. This page lists each one with its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Mercer County, IL?
Of the districts serving Mercer County, United Community School District 304 has the highest rating on this site at 5/10. That places it in the 46th percentile among Illinois school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on Illinois reading and math assessments, ranked against other districts in Illinois and converted to a 1–10 scale. Percentiles compare districts within Illinois only, never across state lines.