County directory · Illinois · 2026–27

School districts in Sangamon County, IL

Sangamon County has 10 regular public school districts, enrolling 26,567 students in 2024–25. The largest is Springfield SD 186 (13,014 students, 49% of the county), followed by Ball Chatham CUSD 5 and Rochester CUSD 3A. All 10 offer kindergarten. Illinois's kindergarten cutoff: turn 5 by September 1.

The 10 districts, largest first

School districts in Sangamon County, IL by 2024–25 enrollment
District and officeGradesSchoolsStudentsKindergartenDistrict office contact
Springfield SD 186
3063 Fiat Ave, Springfield
Pre-K–123413,014955
(217) 525-3002
Ball Chatham CUSD 5
1475 E Plummer Blvd, Chatham
Pre-K–1264,516243
(217) 483-2416
Rochester CUSD 3A
4 Rocket Dr, Rochester
also serves Christian County
Pre-K–1252,012111
(217) 498-6210
Williamsville CUSD 15
451 S Pine St, Williamsville
also serves Logan County and Menard County
Pre-K–1231,45889
(217) 566-2014
Pleasant Plains CUSD 8
315 W Church St, Pleasant Plains
also serves Menard County and Morgan County
Pre-K–1231,294100
(217) 626-1041
Riverton CUSD 14
6425 Old Route 36, Riverton
Pre-K–1231,21970
(217) 629-6009
Auburn CUSD 10
606 W North St, Auburn
also serves Montgomery County
Pre-K–1241,05553
(217) 438-6164
New Berlin CUSD 16
600 N Cedar St, New Berlin
also serves Morgan County
Pre-K–12386368
(217) 488-2040
Pawnee CUSD 11
810 4th St, Pawnee
also serves Christian County and Montgomery County
Pre-K–12257228
(217) 625-2471
Tri City CUSD 1
324 W Charles St, Buffalo
Pre-K–12356441
(217) 364-4811

Sangamon County at a glance

Together the 10 districts run 66 schools from offices in 10 towns. The smallest by enrollment is Tri City CUSD 1, with 564 students; the median Sangamon County district has 1,219. By grade span: 10 Pre-K–12.

Kindergarten in 2024–25, counting the 10 districts that report a K grade: 1,758 children. The biggest kindergarten was Springfield SD 186's, with 955; Ball Chatham CUSD 5 had 243, and the smallest, Pawnee CUSD 11, had 28.

Sangamon County holds 10 of Illinois's 855 regular districts (1.2%) and 1.4% of its 1,837,668 public school students, ranking 21st of 102 counties by number of districts and 12th by enrollment. By size, 1 enroll 5,000 or more, 6 enroll 1,000 to 4,999 and 3 have fewer than 1,000 students, and the average school here has about 403 students.

6 districts reach past the county line: Rochester CUSD 3A (into Christian County), Williamsville CUSD 15 (into Logan County and Menard County), Pleasant Plains CUSD 8 (into Menard County and Morgan County), Auburn CUSD 10 (into Montgomery County), New Berlin CUSD 16 (into Morgan County) and Pawnee CUSD 11 (into Christian County and Montgomery County).

Which district am I in?

Each district draws its own attendance zones, so your home address decides it, and with 6 of Sangamon County's districts crossing county lines the county alone won't. There is no address lookup here; ask the district. Each one's own site:

Springfield SD 186 · Ball Chatham CUSD 5 · Rochester CUSD 3A · Williamsville CUSD 15 · Pleasant Plains CUSD 8 · Riverton CUSD 14 · Auburn CUSD 10 · New Berlin CUSD 16 · Pawnee CUSD 11 · Tri City CUSD 1

What grade will my child be in?

↓ Tap Calculate to see the grade
Most US states use a September 1 cutoff. Year-stamped for the 2026–27 school year.

More in Illinois

Every Illinois district by county · Illinois kindergarten cutoff

More Illinois county directories: Champaign County (15) · Grundy County (12) · Kankakee County (11) · Lake County (44) · LaSalle County (26) · Winnebago County (11)

Sources

District list, grades, school counts and websites: NCES Common Core of Data (CCD) LEA Universe Directory, SY 2025-26 (preliminary, v0a), published July 1, 2026. Regular public districts only (NCES LEA types 1 and 2); charter-only, state-run and regional service agencies are not listed.
Enrollment: NCES CCD LEA Membership, SY 2024-25 (v1a), published December 29, 2025 — the newest year NCES has released.
Counties: NCES EDGE Public LEA Geocodes, SY 2024-25 (district office location) and NCES EDGE Geographic Relationship Files 2025 (grf25_lea_county) (counties each district boundary covers).
Downloaded October 20, 2026. Spot something off? Email [email protected].