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 | $158,972 | BK |
| ASPEN | Rapid City, SD | 01-01-1966 | $157,125 | CU |
| Heartland State Bank | Redfield, SD | 01-01-1909 | $147,945 | BK |
| Great Plains Bank | Eureka, SD | 10-23-1920 | $145,169 | BK |
| Citizens State Bank, of Arlington | Arlington, SD | 08-28-1901 | $145,167 | BK |
| First State Bank of Roscoe | Roscoe, SD | 05-23-1903 | $138,564 | BK |
| DNB NATIONAL BANK | Clear Lake, SD | 01-01-1926 | $115,656 | BK |
| EXPLORERS | YANKTON, SD | 01-01-1962 | $106,565 | CU |
| Security State Bank | Alexandria, SD | 07-01-1946 | $101,577 | BK |
| State Bank of Eagle Butte | Eagle Butte, SD | 02-01-1960 | $78,183 | BK |
| Western Dakota Bank | Timber Lake, SD | 01-01-1919 | $78,157 | BK |
| Farmers State Bank of Canton | Canton, SD | 10-01-1901 | $76,444 | BK |
| DAKOTA PLAINS | Lemmon, SD | 01-01-1957 | $75,846 | CU |
| NORSTAR | Britton, SD | 01-01-1942 | $73,061 | CU |
| Ipswich State Bank | Ipswich, SD | 04-13-1938 | $67,154 | BK |