Harmony zip code
Zip code in Harmony, IL
The location Harmony belongs to Hancock County, state of Illinois. Harmony has been assigned with the zip code 62321.
The location name Harmony is listed as unacceptable by the US Postal Service so any mailing should avoid it. Instead you can use Carthage, the official name of the location.
| Zip code | Type | Population |
|---|---|---|
| 62321 | STANDARD | 3,420 |
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