14 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 72903 | Fort Smith | 27,242 |
| 72904 | Fort Smith | 21,296 |
| 72901 | Fort Smith | 19,819 |
| 72908 | Fort Smith | 14,288 |
| 72936 | Greenwood | 14,070 |
| 72916 | Fort Smith | 11,711 |
| 72941 | Lavaca | 5,140 |
| 72923 | Barling | 4,956 |
| 72937 | Hackett | 4,075 |
| 72944 | Mansfield | 2,599 |
| 72940 | Huntington | 1,829 |
| 72938 | Hartford | 933 |
| 72945 | Midland | 475 |
| 72905 | Fort Smith | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Sebastian County, Arkansas (US Census).