| Location | Club Name | Scale(s) | Contact Information |
|---|---|---|---|
| Coeur d’Alene, ID | Inland Northwest Garden Railway Society | G | Website |
| Inland Northwest Free-moN | N | Website | |
| Lewiston | Lewis-Clark Train Club Inc. | O, HO, N | |
| Billings, MT | Rimrock Model Railroad Club | HO | |
| Bitterroot Valley, MT | Bitterroot Valley Model Railroad Club | HO (modular) | |
| Bozeman, MT | Montana NTRAK: Model Railroading Under the Big Sky | N (modular) | |
| Great Falls, MT | Great Falls Model RR Club
Montana Museum of RR History |
HO | Website |
| Helena, MT | Helena Model Railroad Group | HO (modular) | |
| Libby, MT | Club at Don’s Depot | HO | |
| Livingston, MT | Livingston Model Railroad Club | G, O, HO, N | Website |
| Missoula, MT | National Railroad Historical Chapter – Western Montana Chapter | ||
| Missoula, MT | Missoula Model Railroad Club Inc. | HO (modular) | Website |
| Polson, MT | Mission Mountain Model Railroad Club | HO | |
| Sidney, MT | Sugar Valley Rails | O, HO | |
| Spokane, WA | Evergreen Model Railroaders | HO | Website |
| Spokane, WA |
Inland Empire Railroad Historical Society Inland Northwest Rail Museum |
1:1, O, On3 |
Website |
| Spokane, WA | Inland Empire N Scalers | N (NTRAK) | |
| Spokane, WA | River City Modelers | HO | Website |
| Tri-Cities | Tri City Model Railroaders | HO | Website |
| Yakima | Yakima Valley Railroaders Club | HO (modular) |