You're in a "tough" area, not a lot of coverage. There is a "Broadcastify" feed for Stillwater County you might listen too.
From the Radio Reference homepage, the top menu bar, click on "Live Audio", then "Browse All Feeds", On the Map Click on the state of Montana, the green shaded counties all have active feeds, Click on "Stillwater County", then click on the "Play arrow". Stillwater County is all VHF. Carbon County also has a feed. Carbon County is all VHF and I can hear Carbon County Dispatch clear up here in Lewistown.
If you travel around the area, i.e. Billings, Bozeman you might get a scanner then can do the P25 systems. Billings and Bozeman and several other cities and counties are on the State Trunked Radio System (Montana Public Safety Communication System) [MPSCS} and it has plenty of traffic for Law, EMS, Fire, Public Works, etc.
Hope this helps out, sorry for the slow reply.
73, Rex