allk12 · Rankings · Largest · Illinois · St. Clair County

The largest public schools in St. Clair County, Illinois

84 public schools in St. Clair County, Illinois appear in this ranking of the largest public schools, ranked by total student enrollment, excluding online and virtual schools. Belleville High School-East leads the list at 2,600, against a median of 334 across the ranked schools.

Use the search box to find a specific school within this ranking, sort by any column, or export the full list. Built from NCES and state data for 2024-25.

Schools ranked

St. Clair County, Illinois

Top Students

2,600

Median Students

334

LARGEST · ST. CLAIR COUNTY, ILLINOIS

#	School	City	District	Level	Students
1	Belleville High School-East	Belleville, IL	Belleville Twp HSD 201	High	2,600
2	O Fallon High School	O Fallon, IL	O Fallon Twp HSD 203	High	2,540
3	Belleville High School-West	Belleville, IL	Belleville Twp HSD 201	High	2,118
4	Collinsville High School	Collinsville, IL	Collinsville CUSD 10	High	1,956
5	East St Louis Senior High School	East Saint Louis, IL	East St Louis SD 189	High	1,288
6	Mascoutah High School	Mascoutah, IL	Mascoutah CUD 19	High	1,243
7	Belle Valley School	Belleville, IL	Belle Valley SD 119	Elementary	997
8	Mascoutah Middle School	Mascoutah, IL	Mascoutah CUD 19	Middle	973
9	Mascoutah Elem School	Mascoutah, IL	Mascoutah CUD 19	Elementary	853
10	Scott Elem School	Scott Air Force Base, IL	Mascoutah CUD 19	Elementary	852
11	Cahokia High School	Cahokia, IL	Cahokia CUSD 187	High	850
12	Freeburg Community High Sch	Freeburg, IL	Freeburg CHSD 77	High	689
13	Whiteside Elem School	Belleville, IL	Whiteside SD 115	Elementary	680
14	Fulton Jr High School	O Fallon, IL	O Fallon CCSD 90	Middle	667
15	Amelia V Carriel Jr High	O Fallon, IL	O Fallon CCSD 90	Middle	664
16	Marie Schaefer Elem School	O Fallon, IL	O Fallon CCSD 90	Elementary	598
17	Delores Moye Elem School	O Fallon, IL	O Fallon CCSD 90	Elementary	595
18	Wirth/Parks Middle School	Cahokia, IL	Cahokia CUSD 187	Middle	571
19	Abraham Lincoln Elem School	Belleville, IL	Belleville SD 118	Elementary	542
20	Smithton Elem School	Smithton, IL	Smithton CCSD 130	Elementary	541
21	Mason/Clark Middle Sch	East Saint Louis, IL	East St Louis SD 189	Middle	540
22	Wyvetter Younge Sch of Excellence	E Saint Louis, IL	East St Louis SD 189	Elementary	534
23	Freeburg Elem School	Freeburg, IL	Freeburg CCSD 70	Middle	508
24	Bluffview Elem School	Dupo, IL	Comm Unit School District No 196	Elementary	501
25	Wolf Branch Elem School	Swansea, IL	Wolf Branch SD 113	Elementary	482
26	Whiteside Middle School	Belleville, IL	Whiteside SD 115	Middle	475
27	Estelle Kampmeyer Elem School	O Fallon, IL	O Fallon CCSD 90	Elementary	465
28	Millstadt Consolidated School	Millstadt, IL	Millstadt CCSD 160	Middle	453
29	J Emmett Hinchcliffe Sr Elem Sch	O Fallon, IL	O Fallon CCSD 90	Elementary	452
30	Union Elem School	Belleville, IL	Belleville SD 118	Elementary	432
31	Wingate Elementary School	Shiloh, IL	Mascoutah CUD 19	Elementary	424
32	Laverna Evans Elem School	O Fallon, IL	O Fallon CCSD 90	Elementary	421
33	Katie Harper-Wright Elem	East Saint Louis, IL	East St Louis SD 189	Elementary	418
34	William Holliday Elem School	Fairview Heights, IL	Pontiac-W Holliday SD 105	Elementary	418
35	Ellis Elem School	Belleville, IL	Harmony Emge SD 175	Elementary	382
36	Vivian Adams Early Child Ctr	East Saint Louis, IL	East St Louis SD 189	Elementary	377
37	West Jr High School	Belleville, IL	Belleville SD 118	Middle	364
38	Annette Officer Elementary	East Saint Louis, IL	East St Louis SD 189	Elementary	362
39	East St Louis-Lincoln Middle Sch	East Saint Louis, IL	East St Louis SD 189	Middle	359
40	James Avant Elementary School	Washington Pk, IL	East St Louis SD 189	Elementary	342
41	Wolf Branch Middle School	Swansea, IL	Wolf Branch SD 113	Middle	341
42	Caseyville Elementary School	Caseyville, IL	Collinsville CUSD 10	Elementary	336
43	Shiloh Middle School	Shiloh, IL	Shiloh Village SD 85	Middle	331
44	Dawn Elser Elementary School	O Fallon, IL	Central SD 104	Elementary	330
45	Dunbar Elem School	East Saint Louis, IL	East St Louis SD 189	Elementary	327
46	High Mount Elem School	Swansea, IL	High Mount SD 116	Elementary	325
47	Illini Elem School	Fairview Heights, IL	Grant CCSD 110	Elementary	315
48	Westhaven Elementary	Belleville, IL	Belleville SD 118	Elementary	313
49	Lebanon Elem School	Lebanon, IL	Lebanon CUSD 9	Elementary	312
50	Central Jr High School	Belleville, IL	Belleville SD 118	Middle	308

Page 1 of 2 · top 84 of 84 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.