Smithboro zipcode
| City | Smithboro |
| ZIP Code | 62284 |
| Type | Standard |
| State Code | IL |
| State | Illinois |
ZIP code of Smithboro is 62284. This place is located in Illinois state in US. To send any postal service to Smithboro, you must use 62284 zipcode.
You should avoid following 2 city names of Illinois to be used with the ZIP code 62284.
- Hookdale, IL
- Pleasant Mound, IL