Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| Farmers and Merchants State Bank | Plankinton, SD | 04-06-1910 | $181,818 | BK |
| ASPEN | Rapid City, SD | 01-01-1966 | $164,469 | CU |
| Heartland State Bank | Redfield, SD | 01-01-1909 | $154,728 | BK |
| Great Plains Bank | Eureka, SD | 10-23-1920 | $154,487 | BK |
| Citizens State Bank, of Arlington | Arlington, SD | 08-28-1901 | $150,588 | BK |
| First State Bank of Roscoe | Roscoe, SD | 05-23-1903 | $146,777 | BK |
| DNB NATIONAL BANK | Clear Lake, SD | 01-01-1926 | $116,844 | BK |
| EXPLORERS | YANKTON, SD | 01-01-1962 | $108,250 | CU |
| Security State Bank | Alexandria, SD | 07-01-1946 | $107,108 | BK |
| State Bank of Eagle Butte | Eagle Butte, SD | 02-01-1960 | $86,332 | BK |
| Western Dakota Bank | Timber Lake, SD | 01-01-1919 | $85,877 | BK |
| DAKOTA PLAINS | Lemmon, SD | 01-01-1957 | $85,787 | CU |
| Farmers State Bank of Canton | Canton, SD | 10-01-1901 | $82,495 | BK |
| Ipswich State Bank | Ipswich, SD | 04-13-1938 | $75,071 | BK |
| NORSTAR | Britton, SD | 01-01-1942 | $74,921 | CU |