Cities within District
- Alhambra 62001
- Baldwin 62217
- Belleville 62220/62221/62222/62223
- Brooklyn 62059
- Cahokia 62206
- Caseyville 62232
- Chester 62233
- Collinsville 62234
- Columbia 62236
- Coulterville 62237
- Dozaville 62242
- Dupo 62239
- East Carondelet 62240
- East St. Louis 62201/62202/62203/62204/62205/62207
- Ellis Grove 62241
- Evansville 62242
- Fairview Heights 62208
- Fayetteville 62258
- Freeburg 62243
- Fults 62244
- Granite City 62040
- Hecker 62248
- Highland 62249
- Kaskaskia 62233
- Lebanon 62254
- Lenzburg 62255
- Lively Grove 62268
- Lovejoy 62959
- Madison 62060
- Maeystown 62256
- Marine 62061
- Marissa 62257
- Maryville 62062
- Mascoutah 62258
- Menard 62259
- Millstadt 62260
- Mitchell 62059
- Modoc 62261
- New Athens 62264
- New Douglas 62074
- O’Fallon 62269
- Pierron 62273
- Pontoon Beach 62040
- Prairie Du Rocher 62277
- Red Bud 62278
- Renault 62279
- Rockwood 62280
- Ruma 62278
- Sauget 62206
- Scott AFB 62225
- Shiloh 62221/62269
- Smithton 62285
- Sparta 62286
- St. Jacob 62281
- St. Libory 62282
- Steeleville 62288
- Stone Church 62268
- Summerfield 62289
- Swansea 62226
- Tilden 62292
- Troy 62294
- Valmeyer 62295
- Venice 62090
- Walsh 62297
- Waterloo 62298
- Welge 62288
Some portions of the following cities are considered in-district for Southwestern. Please call 618-235-2700 ext. 5455 for eligible streets/addresses.
- Campbell Hill 62916
- Edwardsville 62025
- Glen Carbon 62034
- New Baden 62265
- Pocahontas 62275
- Percy 62272
- Trenton 62293
- Venedy 62212
