Union Mills zip code
Zip code in Union Mills, WA
The location Union Mills belongs to Thurston County, state of Washington. Union Mills has been assigned with the zip code 98501.
The location name Union Mills is listed as unacceptable by the US Postal Service so any mailing should avoid it. Instead you can use Olympia, the official name of the location. You can also use any of the following names: Tumwater.
| Zip code | Type | Population |
|---|---|---|
| 98501 | STANDARD | 39,270 |
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