First three digits · Illinois
ZIP Codes Starting with
79 ZIP codes start with 622, sorted at the St Louis, MO (SCF 630) sectional center (USPS labeling list L005, effective October 1, 2026) in Illinois: 74 residential ZIP codes across 10 counties and 5 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 622 mean?
The first digit, 6, is one of ten national areas (Illinois, Kansas, Missouri and Nebraska). The first three, 622, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 622 to the St Louis, MO (SCF 630) facility. The last two digits pick the delivery area. By residents, the largest town names among the 622 ZIP codes are Belleville, East Saint Louis, O Fallon, Collinsville, Waterloo and Fairview Heights.
The same facility sorts 12 prefixes, 714 ZIP codes in all: 620, 622, 628, 629, 630, 631, 633, 634, 636, 637, 638, 639.
Where are the 622 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 622
| County | ||||||
|---|---|---|---|---|---|---|
| 62201 | East Saint Louis | St. Clair County | 4,921 | 409 | $27k | $60k |
| 62202 | East Saint Louis | St. Clair County | PO Box or unique | – | – | – |
| 62203 | East Saint Louis | St. Clair County | 5,465 | 967 | $42k | $69k |
| 62204 | East Saint Louis | St. Clair County | 4,055 | 878 | $35k | $48k |
| 62205 | East Saint Louis | St. Clair County | 6,459 | 1,016 | $46k | $42k |
| 62206 | East Saint Louis | St. Clair County | 12,959 | 891 | $34k | $53k |
| 62207 | East Saint Louis | St. Clair County | 6,984 | 1,126 | $30k | $58k |
| 62208 | Fairview Heights | St. Clair County | 16,821 | 1,256 | $80k | $176k |
| 62214 | Addieville | Washington County | 1,048 | 19 | $104k | $169k |
| 62215 | Albers | Clinton County | 1,917 | 173 | $108k | $205k |
| 62216 | Aviston | Clinton County | 3,156 | 132 | $120k | $261k |
| 62217 | Baldwin | Randolph County | 767 | 25 | $85k | $146k |
| 62218 | Bartelso | Clinton County | 2,018 | 44 | $91k | $218k |
| 62219 | Beckemeyer | Clinton County | 993 | 1,165 | $64k | $121k |
| 62220 | Belleville | St. Clair County | 19,152 | 663 | $66k | $157k |
| 62221 | Belleville | St. Clair County | 29,875 | 854 | $82k | $218k |
| 62222 | Belleville | St. Clair County | PO Box or unique | – | – | – |
| 62223 | Belleville | St. Clair County | 16,269 | 634 | $74k | $159k |
| 62225 | Scott Air Force Base | St. Clair County | 5,242 | 999 | $103k | – |
| 62226 | Belleville | St. Clair County | 28,255 | 2,037 | $71k | $167k |
| 62230 | Breese | Clinton County | 6,377 | 124 | $91k | $229k |
| 62231 | Carlyle | Clinton County | 6,377 | 33 | $84k | $168k |
| 62232 | Caseyville | St. Clair County | 7,063 | 551 | $64k | $125k |
| 62233 | Chester | Randolph County | 8,326 | 122 | $85k | $121k |
| 62234 | Collinsville | Madison County | 31,648 | 849 | $70k | $170k |
| 62236 | Columbia | Monroe County | 14,154 | 235 | $109k | $307k |
| 62237 | Coulterville | Perry County | 2,367 | 26 | $55k | $150k |
| 62238 | Cutler | Perry County | 558 | 11 | $68k | $96k |
| 62239 | Dupo | St. Clair County | 4,232 | 495 | $61k | $111k |
| 62240 | East Carondelet | St. Clair County | 1,796 | 121 | $96k | $89k |
| 62241 | Ellis Grove | Randolph County | 879 | 23 | $83k | $149k |
| 62242 | Evansville | Randolph County | 1,660 | 33 | $60k | $122k |
| 62243 | Freeburg | St. Clair County | 6,418 | 124 | $103k | $280k |
| 62244 | Fults | Monroe County | 928 | 20 | $108k | $252k |
| 62245 | Germantown | Clinton County | 1,861 | 101 | $92k | $205k |
| 62246 | Greenville | Bond County | 10,077 | 70 | $67k | $160k |
| 62247 | Hagarstown | Fayette County | PO Box or unique | – | – | – |
| 62248 | Hecker | Monroe County | 521 | 2,067 | $80k | $167k |
| 62249 | Highland | Madison County | 16,205 | 183 | $90k | $228k |
| 62250 | Hoffman | Clinton County | 607 | 1,195 | $67k | $107k |
| 62252 | Huey | Clinton County | PO Box or unique | – | – | – |
| 62253 | Keyesport | Bond County | 932 | 30 | $47k | $96k |
| 62254 | Lebanon | St. Clair County | 6,710 | 164 | $97k | $218k |
| 62255 | Lenzburg | St. Clair County | 1,092 | 41 | $81k | $161k |
| 62256 | Maeystown | Monroe County | 35 | 294 | $126k | $158k |
| 62257 | Marissa | St. Clair County | 2,046 | 25 | $79k | $138k |
| 62258 | Mascoutah | St. Clair County | 10,437 | 138 | $95k | $233k |
| 62259 | Menard | Randolph County | PO Box or unique | – | – | – |
| 62260 | Millstadt | St. Clair County | 6,668 | 152 | $91k | $253k |
| 62261 | Modoc | Randolph County | 80 | 3 | – | – |
| 62262 | Mulberry Grove | Bond County | 1,967 | 29 | $65k | $124k |
| 62263 | Nashville | Washington County | 4,819 | 33 | $72k | $165k |
| 62264 | New Athens | St. Clair County | 3,097 | 47 | $57k | $127k |
| 62265 | New Baden | Clinton County | 4,555 | 135 | $85k | $195k |
| 62266 | New Memphis | Clinton County | 103 | 13 | $53k | $114k |
| 62268 | Oakdale | Washington County | 764 | 14 | $96k | $151k |
| 62269 | O Fallon | St. Clair County | 35,923 | 1,204 | $104k | $292k |
| 62271 | Okawville | Washington County | 1,873 | 30 | $83k | $164k |
| 62272 | Percy | Randolph County | 1,521 | 47 | $51k | $84k |
| 62273 | Pierron | Bond County | 305 | 226 | $51k | $102k |
| 62274 | Pinckneyville | Perry County | 8,041 | 56 | $72k | $132k |
| 62275 | Pocahontas | Bond County | 3,012 | 30 | $85k | $209k |
| 62277 | Prairie Du Rocher | Randolph County | 940 | 14 | $68k | $128k |
| 62278 | Red Bud | Monroe County | 6,281 | 60 | $80k | $178k |
| 62279 | Renault | Monroe County | 112 | 68 | $139k | – |
| 62280 | Rockwood | Jackson County | 421 | 8 | $62k | $211k |
| 62281 | Saint Jacob | Madison County | 3,059 | 92 | $132k | $309k |
| 62282 | Saint Libory | St. Clair County | 563 | 293 | $117k | $179k |
| 62284 | Smithboro | Bond County | 686 | 25 | $52k | $154k |
| 62285 | Smithton | St. Clair County | 4,239 | 261 | $136k | $274k |
| 62286 | Sparta | Randolph County | 5,491 | 55 | $61k | $118k |
| 62288 | Steeleville | Randolph County | 2,820 | 77 | $67k | $178k |
| 62289 | Summerfield | St. Clair County | 273 | 182 | $47k | $65k |
| 62292 | Tilden | Randolph County | 762 | 451 | $48k | $70k |
| 62293 | Trenton | Clinton County | 4,433 | 85 | $98k | $251k |
| 62294 | Troy | Madison County | 15,325 | 520 | $121k | $276k |
| 62295 | Valmeyer | Monroe County | 1,459 | 21 | $88k | $203k |
| 62297 | Walsh | Randolph County | 158 | 7 | $91k | $121k |
| 62298 | Waterloo | Monroe County | 18,208 | 127 | $101k | $290k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.