Tri-County Implement Inc Farm Equipment Contact Information Phone: (406) 488-4400 Address: 2429 W Holly St, Sidney, Montana 59270 Get Directions About Tri-County Implement Inc is a farm equipment sales company located in Sidney, MT. Loading... No Records Found Sorry, no records were found. Please adjust your search criteria and try again. Maps failed to load Sorry, unable to load the Maps API. Claim Listing Recently Viewed: Loading... Previous Next