St. Clair County, Illinois ZIP codes
30ZIP codes
20Cities and towns
247,743People in ZIP areas
314, 557, 618Area codes
St. Clair County is in Illinois and the Central Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.
All ZIP codes in St. Clair County
| ZIP code | City | Type | Population | Median income |
|---|---|---|---|---|
| 62059 | Lovejoy | PO Box only | 729 | $30,673 |
| 62071 | National Stock Yards | PO Box only | – | – |
| 62201 | East Saint Louis | Standard | 4,921 | $27,437 |
| 62202 | East Saint Louis | PO Box only | – | – |
| 62203 | East Saint Louis | Standard | 5,465 | $42,111 |
| 62204 | East Saint Louis | Standard | 4,055 | $35,346 |
| 62205 | East Saint Louis | Standard | 6,459 | $45,672 |
| 62206 | East Saint Louis | Standard | 12,959 | $33,838 |
| 62207 | East Saint Louis | Standard | 6,984 | $29,845 |
| 62208 | Fairview Heights | Standard | 16,821 | $80,205 |
| 62220 | Belleville | Standard | 19,152 | $65,952 |
| 62221 | Belleville | Standard | 29,875 | $82,271 |
| 62222 | Belleville | PO Box only | – | – |
| 62223 | Belleville | Standard | 16,269 | $73,700 |
| 62225 | Scott Air Force Base | Standard | 5,242 | $103,284 |
| 62226 | Belleville | Standard | 28,255 | $70,797 |
| 62232 | Caseyville | Standard | 7,063 | $64,269 |
| 62239 | Dupo | Standard | 4,232 | $61,191 |
| 62240 | East Carondelet | Standard | 1,796 | $96,063 |
| 62243 | Freeburg | Standard | 6,418 | $103,342 |
| 62254 | Lebanon | Standard | 6,710 | $96,492 |
| 62255 | Lenzburg | Standard | 1,092 | $80,506 |
| 62257 | Marissa | Standard | 2,046 | $78,750 |
| 62258 | Mascoutah | Standard | 10,437 | $94,655 |
| 62260 | Millstadt | Standard | 6,668 | $91,039 |
| 62264 | New Athens | Standard | 3,097 | $57,015 |
| 62269 | O Fallon | Standard | 35,923 | $103,818 |
| 62282 | Saint Libory | PO Box only | 563 | $117,143 |
| 62285 | Smithton | Standard | 4,239 | $136,345 |
| 62289 | Summerfield | PO Box only | 273 | $47,237 |
Cities and towns in St. Clair County
- East Saint Louis 7 ZIPs
- Belleville 5 ZIPs
- Caseyville 1 ZIP
- Dupo 1 ZIP
- East Carondelet 1 ZIP
- Fairview Heights 1 ZIP
- Freeburg 1 ZIP
- Lebanon 1 ZIP
- Lenzburg 1 ZIP
- Lovejoy 1 ZIP
- Marissa 1 ZIP
- Mascoutah 1 ZIP
- Millstadt 1 ZIP
- National Stock Yards 1 ZIP
- New Athens 1 ZIP
- O Fallon 1 ZIP
- Saint Libory 1 ZIP
- Scott Air Force Base 1 ZIP
- Smithton 1 ZIP
- Summerfield 1 ZIP
Area codes in St. Clair County
Questions
- How many ZIP codes are in St. Clair County, IL?
- St. Clair County has 30 ZIP codes, 24 of them standard ZIP codes for street addresses.
- What cities are in St. Clair County?
- St. Clair County ZIP codes cover East Saint Louis, Belleville, Caseyville, Dupo, East Carondelet, Fairview Heights, Freeburg and Lebanon and 12 other places.
- What area code is St. Clair County, IL?
- St. Clair County uses area codes 314, 557 and 618.
- What time zone is St. Clair County in?
- St. Clair County is in Central Time.
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