| Business | Phone |
| Thorson's Fuel & Food 1500 9th Ave Se, Watertown 57201 | (605) 882-4975 |
| Casey's General Store 185 4th St Ne, Watertown 57201 | (605) 882-9991 |
| Cenex Touch Free Car Wash 1601 9th Ave Se, Watertown 57201 | (605) 886-2271 |
| Spies Corp 312 9th Ave Se # A, Watertown 57201 | (605) 882-0464 |
| Convenience Corner 4 10th St Nw, Watertown 57201 | (605) 882-2813 |
| Sioux Valley Cooperative 220 10th St Nw, Watertown 57201 | (605) 886-5829 |
| Cowboy Country Stores 1400 4th St Ne, Watertown 57201 | (605) 886-4444 |
| Cowboy Country Stores 305 10th St Nw, Watertown 57201 | (605) 882-3304 |
| Cowboy Country Stores 504 9th St Sw, Watertown 57201 | (605) 882-9000 |
| Powell's Service Gas & Grocery 913 3rd Ave Nw, Watertown 57201 | (605) 886-9920 |
| Prairie Stop 1107 9th Ave Sw, Watertown 57201 | (605) 886-3133 |
| Freedom Valu Ctr 225 W Kemp, Watertown 57201 | (605) 886-2296 |
| Freedom Valu Ctr 615 9th Ave Se, Watertown 57201 | (605) 886-6690 |
| Gas N Goodies 152 4th St Ne, Watertown 57201 | (605) 882-3692 |
| Interstate Shell 825 35th Cir Se, Watertown 57201 | (605) 886-3055 |
| Little River City 20 9th Ave Sw, Watertown 57201 | (605) 882-3744 |
| Kum & Go 103 5th St Ne, Watertown 57201 | (605) 886-9563 |