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 | $151,570 | BK |
| Great Plains Bank | Eureka, SD | 10-23-1920 | $148,370 | BK |
| First State Bank of Roscoe | Roscoe, SD | 05-23-1903 | $145,931 | BK |
| Citizens State Bank, of Arlington | Arlington, SD | 08-28-1901 | $145,145 | BK |
| ASPEN | Rapid City, SD | 01-01-1966 | $131,354 | CU |
| DNB NATIONAL BANK | Clear Lake, SD | 01-01-1926 | $108,799 | BK |
| EXPLORERS | YANKTON, SD | 01-01-1962 | $105,646 | CU |
| Security State Bank | Alexandria, SD | 07-01-1946 | $100,727 | BK |
| State Bank of Eagle Butte | Eagle Butte, SD | 02-01-1960 | $80,624 | BK |
| Western Dakota Bank | Timber Lake, SD | 01-01-1919 | $72,830 | BK |
| HEALTHCARE PLUS | Aberdeen, SD | 01-01-1979 | $70,970 | CU |
| Ipswich State Bank | Ipswich, SD | 04-13-1938 | $70,905 | BK |
| DAKOTA PLAINS | Lemmon, SD | 01-01-1957 | $69,930 | CU |
| NORSTAR | Britton, SD | 01-01-1942 | $69,503 | CU |
| Community Bank | Avon, SD | 01-01-1914 | $65,973 | BK |