Amateur Radio Callsigns in ZIP Code: 57003
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| KB0BBA | HAMRE, DAVID L | Baltic | SD | United States |
| W0ROE | ROE, MARTIN S | Baltic | SD | United States |
| KC8WVW | Roe, Nathan S | Baltic | SD | United States |
| KE0GFA | Molstad, Casen | Baltic | SD | United States |
| KE0GFC | Molstad, Tom O | Baltic | SD | United States |
| KE0LBG | Molstad, Cove B | Baltic | SD | United States |