St Clair County Post Offices

4825 Bond Ave
East Saint Louis, Illinois 62207

120 W Washington St
Belleville, Illinois 62220

801 Range Ln
East Saint Louis, Illinois 62206

113 S Long St
Caseyville, Illinois 62232

116 Emma Ave
Dupo, Illinois 62239

5731 Mount Pleasant Ln
Belleville, Illinois 62223

824 State St
East Carondelet, Illinois 62240

950 Missouri Ave
East Saint Louis, Illinois 62201

8701 State St
East Saint Louis, Illinois 62203

10850 Lincoln Trl Unit 20
Fairview Heights, Illinois 62208

3 S Belleville St
Freeburg, Illinois 62243

201 E Saint Louis St
Lebanon, Illinois 62254

312 N Charles St
Lenzburg, Illinois 62255

114 N Main St
Marissa, Illinois 62257

18 W Main St
Mascoutah, Illinois 62258

20 W White St
Millstadt, Illinois 62260

200 S Benton St
New Athens, Illinois 62264

1111 S Lincoln Ave
O Fallon, Illinois 62269

7340 State Route 15
Saint Libory, Illinois 62282

404 W Martin St
Scott Air Force Base, Illinois 62225

512 S Main St
Smithton, Illinois 62285

101 E Park St
Summerfield, Illinois 62289

St Clair County

There are 22 US Post Offices in St Clair County serving a total of 188,710 residents equating to 8,578 residents per post office. It's estimated that approximately 301,202 packages are handled across the 22 county post offices annually.