Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| Heartland State Bank | Redfield, SD | 01-01-1909 | $151,855 | BK |
| Great Plains Bank | Eureka, SD | 10-23-1920 | $146,802 | BK |
| ASPEN | Rapid City, SD | 01-01-1966 | $144,431 | CU |
| Citizens State Bank, of Arlington | Arlington, SD | 08-28-1901 | $141,740 | BK |
| First State Bank of Roscoe | Roscoe, SD | 05-23-1903 | $135,080 | BK |
| DNB NATIONAL BANK | Clear Lake, SD | 01-01-1926 | $108,332 | BK |
| EXPLORERS | YANKTON, SD | 01-01-1962 | $103,528 | CU |
| Security State Bank | Alexandria, SD | 07-01-1946 | $99,284 | BK |
| State Bank of Eagle Butte | Eagle Butte, SD | 02-01-1960 | $76,073 | BK |
| DAKOTA PLAINS | Lemmon, SD | 01-01-1957 | $73,144 | CU |
| Western Dakota Bank | Timber Lake, SD | 01-01-1919 | $70,860 | BK |
| HEALTHCARE PLUS | Aberdeen, SD | 01-01-1979 | $68,668 | CU |
| NORSTAR | Britton, SD | 01-01-1942 | $68,188 | CU |
| Community Bank | Avon, SD | 01-01-1914 | $66,801 | BK |
| Ipswich State Bank | Ipswich, SD | 04-13-1938 | $64,519 | BK |