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Best Money Market Rates at South Dakota Credit Unions
25 current offers from 8 credit unions. Updated May 24, 2026.
Search by ZIP for nearest branch →| APY | Credit union | Term | Location | Source |
|---|---|---|---|---|
| 2.78% | Highmark | Open | Rapid City, SD | Site ↗ |
| 2.53% | Voyage | Open | Sioux Falls, SD | Site ↗ |
| 2.53% | Highmark | Open | Rapid City, SD | Site ↗ |
| 2.32% | Voyage | Open | Sioux Falls, SD | Site ↗ |
| 2.07% | Voyage | Open | Sioux Falls, SD | Site ↗ |
| 2.00% | Service First | Open | Sioux Falls, SD | Site ↗ |
| 1.97% | Highmark | Open | Rapid City, SD | Site ↗ |
| 1.75% | Service First | Open | Sioux Falls, SD | Site ↗ |
| 1.71% | Voyage | Open | Sioux Falls, SD | Site ↗ |
| 1.60% | Northern Hills | Open | Sturgis, SD | Site ↗ |
| 1.50% | Northern Hills | Open | Sturgis, SD | Site ↗ |
| 1.41% | Voyage | Open | Sioux Falls, SD | Site ↗ |
| 1.25% | Service First | Open | Sioux Falls, SD | Site ↗ |
| 1.15% | Northern Hills | Open | Sturgis, SD | Site ↗ |
| 1.00% | Service First | Open | Sioux Falls, SD | Site ↗ |
| 1.00% | Sentinel | Open | Ellsworth Afb, SD | Site ↗ |
| 1.00% | Highmark | Open | Rapid City, SD | Site ↗ |
| 0.95% | Sentinel | Open | Ellsworth Afb, SD | Site ↗ |
| 0.90% | Bluestone | Open | Sioux Falls, SD | Site ↗ |
| 0.80% | Northern Hills | Open | Sturgis, SD | Site ↗ |
| 0.80% | Sentinel | Open | Ellsworth Afb, SD | Site ↗ |
| 0.75% | M O | Open | Huron, SD | Site ↗ |
| 0.75% | Service First | Open | Sioux Falls, SD | Site ↗ |
| 0.70% | Bluestone | Open | Sioux Falls, SD | Site ↗ |
| 0.55% | M O | Open | Huron, SD | Site ↗ |