Listing
Zip Codes by County
(UNION County, South Dakota Zip Codes)
| Zip Code | City | County | State | Area Code | Time Zone | DST | Latitude | Longitude |
| 57001 | Nora | UNION | SD | 605 | CST | Y | 43.003944 | -96.610094 |
| 57001 | Alcester | UNION | SD | 605 | CST | Y | 43.003944 | -96.610094 |
| 57001 | Big Springs | UNION | SD | 605 | CST | Y | 43.003944 | -96.610094 |
| 57004 | Beresford | UNION | SD | 605 | CST | Y | 43.062022 | -96.805624 |
| 57004 | Emmet | UNION | SD | 605 | CST | Y | 43.062022 | -96.805624 |
| 57004 | Alsen | UNION | SD | 605 | CST | Y | 43.062022 | -96.805624 |
| 57025 | Spink | UNION | SD | 605 | CST | Y | 42.744148 | -96.665772 |
| 57025 | Junction City | UNION | SD | 605 | CST | Y | 42.744148 | -96.665772 |
| 57025 | Elk Point | UNION | SD | 605 | CST | Y | 42.744148 | -96.665772 |
| 57025 | Richland | UNION | SD | 605 | CST | Y | 42.744148 | -96.665772 |
| 57038 | Jefferson | UNION | SD | 605 | CST | Y | 42.576940 | -96.598648 |
| 57049 | Mccook Lake | UNION | SD | 605 | CST | Y | 42.520413 | -96.504178 |
| 57049 | North Sioux City | UNION | SD | 605 | CST | Y | 42.520413 | -96.504178 |
| 57049 | Dakota Dunes | UNION | SD | 605 | CST | Y | 42.520413 | -96.504178 |
| 57049 | N Sioux City | UNION | SD | 605 | CST | Y | 42.520413 | -96.504178 |
