Walnut Grove zip code
Zip code in Walnut Grove, IL
The location Walnut Grove belongs to McDonough County, state of Illinois. Walnut Grove has been assigned with the zip code 61470.
The location name Walnut Grove is listed as unacceptable by the US Postal Service so any mailing should avoid it. Instead you can use Prairie City, the official name of the location.
| Zip code | Type | Population |
|---|---|---|
| 61470 | STANDARD | 420 |
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