Or by the first letter of a Bank Name
| Headquarters | Date Established | Assets (1000s) | Type | |
|---|---|---|---|---|
| ASPEN | Rapid City, SD | 01-01-1966 | $154,579 | CU |
| Heartland State Bank | Redfield, SD | 01-01-1909 | $150,614 | BK |
| Great Plains Bank | Eureka, SD | 10-23-1920 | $147,793 | BK |
| Citizens State Bank, of Arlington | Arlington, SD | 08-28-1901 | $141,949 | BK |
| First State Bank of Roscoe | Roscoe, SD | 05-23-1903 | $138,085 | BK |
| DNB NATIONAL BANK | Clear Lake, SD | 01-01-1926 | $109,660 | BK |
| EXPLORERS | YANKTON, SD | 01-01-1962 | $108,460 | CU |
| Security State Bank | Alexandria, SD | 07-01-1946 | $104,192 | BK |
| State Bank of Eagle Butte | Eagle Butte, SD | 02-01-1960 | $84,036 | BK |
| DAKOTA PLAINS | Lemmon, SD | 01-01-1957 | $77,692 | CU |
| Western Dakota Bank | Timber Lake, SD | 01-01-1919 | $76,253 | BK |
| NORSTAR | Britton, SD | 01-01-1942 | $74,441 | CU |
| Farmers State Bank of Canton | Canton, SD | 10-01-1901 | $73,933 | BK |
| Ipswich State Bank | Ipswich, SD | 04-13-1938 | $68,513 | BK |
| HEALTHCARE PLUS | Aberdeen, SD | 01-01-1979 | $67,630 | CU |