Sylvan Lake zip code
Zip code in Sylvan Lake, SD
The location Sylvan Lake belongs to Custer County, state of South Dakota. Sylvan Lake has been assigned with the zip code 57730.
The location name Sylvan Lake is listed as unacceptable by the US Postal Service so any mailing should avoid it. Instead you can use Custer, the official name of the location. You can also use any of the following names: Crazy Horse.
| Zip code | Type | Population |
|---|---|---|
| 57730 | STANDARD | 4,910 |
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