Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| Great Plains Bank | Eureka, SD | 10-23-1920 | $148,393 | BK |
| Heartland State Bank | Redfield, SD | 01-01-1909 | $146,535 | BK |
| ASPEN | Rapid City, SD | 01-01-1966 | $145,462 | CU |
| Citizens State Bank, of Arlington | Arlington, SD | 08-28-1901 | $137,148 | BK |
| First State Bank of Roscoe | Roscoe, SD | 05-23-1903 | $131,821 | BK |
| DNB NATIONAL BANK | Clear Lake, SD | 01-01-1926 | $109,734 | BK |
| EXPLORERS | YANKTON, SD | 01-01-1962 | $103,808 | CU |
| Security State Bank | Alexandria, SD | 07-01-1946 | $102,392 | BK |
| State Bank of Eagle Butte | Eagle Butte, SD | 02-01-1960 | $78,390 | BK |
| DAKOTA PLAINS | Lemmon, SD | 01-01-1957 | $76,958 | CU |
| Western Dakota Bank | Timber Lake, SD | 01-01-1919 | $76,131 | BK |
| NORSTAR | Britton, SD | 01-01-1942 | $72,190 | CU |
| Farmers State Bank of Canton | Canton, SD | 10-01-1901 | $72,073 | BK |
| HEALTHCARE PLUS | Aberdeen, SD | 01-01-1979 | $69,736 | CU |
| Community Bank | Avon, SD | 01-01-1914 | $66,901 | BK |