Member companies are ordered by zip code.
| Company Name | Street | Suite | City | ST | Zip | Country | Phone | Fax | Website | |
| Central Security | 201 Meckling St | Gayville | SD | 57031 | (605) 661-7841 | (605) 267-4388 | ||||
| Midwest Alarm Company Inc | 2300 S Dakota Ave | Sioux Falls | SD | 57105 | (605) 339-1709 | (605) 334-8186 | www.midwestalarm.com | |||
| Burdette Security & Technologies | 123 RailRd Ave SE | Aberdeen | SD | 57402 | (605) 225-1423 | (605) 229-1387 |