| Business | Phone |
| Justice Of The Peace 152 Highway 37, Eureka 59917 | (406) 296-2622 |
| Lincoln County Animal Control Po Box 403, Eureka 59917 | (406) 296-2627 |
| Lincoln County Extension Svc 152 Hwy 37, Eureka 59917 | (406) 296-9019 |
| Lincoln County Fair 152 Highway 37, Eureka 59917 | (406) 296-3471 |
| Lincoln County Fairgrounds Osloski Rd, Eureka 59917 | (406) 296-2074 |
| Lincoln County Landfill 401 Airport Rd, Eureka 59917 | (406) 889-5117 |
| Lincoln County Nurse North 152 Highway 37, Eureka 59917 | (406) 296-2023 |