| Business | Phone |
| Wells Fargo Bank 1225 9th Ave Se, Watertown 57201 | (605) 882-2090 |
| Wells Fargo Bank 20 N Maple, Watertown 57201 | (605) 886-8466 |
| Dacotah Bank 1310 9th Ave Se, Watertown 57201 | (605) 886-0645 |
| Dacotah Bank 4 10th St Nw, Watertown 57201 | (605) 884-1811 |
| Reliabank 1401 4th St Ne, Watertown 57201 | (605) 886-6000 |
| Reliabank 830 10th St Sw, Watertown 57201 | (605) 886-7700 |
| Premier Bankcard 1400 Mickelson Dr, Watertown 57201 | (605) 884-4040 |
| First American Bank & Trust 1120 9th Ave Se, Watertown 57201 | (605) 882-8320 |
| First Premier Bank 1 E Kemp, Watertown 57201 | (605) 882-2300 |
| First Premier Bank 1414 9th Ave Se, Watertown 57201 | (605) 886-7593 |
| First Premier Bank 824 34th St Se, Watertown 57201 | (605) 884-2010 |
| Plains Commerce Bank 109 1st Ave Se, Watertown 57201 | (605) 886-6966 |
| Plains Commerce Bank 920 5th St Se, Watertown 57201 | (605) 886-6966 |
| Home Federal Bank 1320 9th Ave Se # 102, Watertown 57201 | (605) 882-9639 |
| Home Federal Bank 523 9th Ave Se, Watertown 57201 | (605) 886-4499 |