| Business | Phone |
| Starr Insurance 38 Mount Rushmore Rd, Custer 57730 | (605) 673-3799 |
| State Farm Insurance 430 Mount Rushmore Rd, Custer 57730 | (605) 673-4141 |
| First Western Agency Inc 40 N 5th St, Custer 57730 | (605) 673-2214 |
| Mark Koch Agency Inc 43 N 6th St, Custer 57730 | (605) 673-4492 |