Amateur Radio Callsigns in ZIP Code: 57030
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| KB0YSW | ROTH 359, BRIAN A | Garretson | SD | United States |
| KE0RJ | BOWER, DALE H | GARRETSON | SD | United States |
| KD0TTD | Bower, Carsen L | Garretson | SD | United States |
| KF0DQH | Peasley, Justin R | Garretson | SD | United States |
| KF0FHS | Scholl, Adam J | Garretson | SD | United States |
| N0BJS | Scott, Bruce J | Garretson | SD | United States |