| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Racetrack | city | Montana | United States | 46.28 | -112.75 | 5029 | |
| Racine Ford (historical) | city | Montana | United States | 47.48 | -112.59 | 4599 | |
| Radersburg | city | Montana | United States | 46.20 | -111.63 | 4350 | |
| Radnor | city | Montana | United States | 48.61 | -114.66 | 3349 | |
| Ragland Bench (historical) | city | Montana | United States | 47.78 | -109.43 | 3349 | |
| Railroad Summer Home Area | city | Montana | United States | 44.66 | -111.15 | 6709 | |
| Rainbow | city | Montana | United States | 47.54 | -111.20 | 3349 | |
| Rainbows End Mobile Home Park | city | Montana | United States | 48.19 | -114.40 | 3349 | |
| Ramburg (historical) | city | Montana | United States | 48.36 | -109.06 | 3349 | |
| Ramsay | city | Montana | United States | 46.01 | -112.69 | 5367 | |
| Ramsey (historical) | city | Montana | United States | 48.42 | -114.35 | 3349 | |
| Rancher (historical) | city | Montana | United States | 46.26 | -107.40 | 2657 | |
| Rankin Place | city | Montana | United States | 45.26 | -109.49 | 5869 | |
| Rapelje | city | Montana | United States | 45.97 | -109.26 | 4189 | |
| Rattlesnake | city | Montana | United States | 48.10 | -109.05 | 3349 | |
| Ravalli | city | Montana | United States | 47.28 | -114.18 | 2798 | |
| Ravenna | city | Montana | United States | 46.71 | -113.53 | 3723 | |
| Raymond | city | Montana | United States | 48.88 | -104.58 | 2509 | |
| Raynesford | city | Montana | United States | 47.27 | -110.73 | 4258 | |
| Reasville (historical) | city | Montana | United States | 45.67 | -111.12 | 5029 | |
| Red Bluff | city | Montana | United States | 45.59 | -111.65 | 5029 | |
| Red Lodge | city | Montana | United States | 45.19 | -109.25 | 5869 | |
| Red Mountain (historical) | city | Montana | United States | 45.79 | -112.49 | 7732 | |
| Red Rock | city | Montana | United States | 44.90 | -112.82 | 5869 | |
| Red Rock Point | city | Montana | United States | 48.70 | -113.82 | 4189 | |
| Red Top | city | Montana | United States | 47.41 | -104.81 | 2549 | |
| Redstone | city | Montana | United States | 48.82 | -104.94 | 2509 | |
| Redwater (historical) | city | Montana | United States | 47.53 | -105.41 | 2509 | |
| Reed Point | city | Montana | United States | 45.71 | -109.54 | 4189 | |
| Reed Trailer Court | city | Montana | United States | 45.74 | -111.06 | 5029 | |
| Reeder Place | city | Montana | United States | 45.05 | -112.00 | 6010 | |
| Reese Creek (historical) | city | Montana | United States | 45.86 | -111.08 | 4593 | |
| Regina (historical) | city | Montana | United States | 47.93 | -107.99 | 2693 | |
| Reistad Trailer Court | city | Montana | United States | 45.66 | -111.00 | 5042 | |
| Renova | city | Montana | United States | 45.82 | -112.13 | 4379 | |
| Republic (historical) | city | Montana | United States | 46.40 | -108.54 | 3595 | |
| Reserve | city | Montana | United States | 48.61 | -104.46 | 1948 | |
| Reuter (historical) | city | Montana | United States | 48.82 | -114.34 | 3681 | |
| Rexford | city | Montana | United States | 48.90 | -115.17 | 2811 | |
| Reynolds City | city | Montana | United States | 46.82 | -113.29 | 5889 | |
| Reynolds Trailer Court | city | Montana | United States | 46.61 | -112.06 | 4189 | |
| Rhodes | city | Montana | United States | 48.28 | -114.47 | 3628 | |
| Ricci Trailer Terraces | city | Montana | United States | 45.02 | -109.93 | 7785 | |
| Rice Motel and Trailer Court | city | Montana | United States | 45.87 | -112.09 | 4373 | |
| Riceville | city | Montana | United States | 47.21 | -110.93 | 4189 | |
| Richards Trailer Court | city | Montana | United States | 46.54 | -110.91 | 5029 | |
| Richel Lodge | city | Montana | United States | 45.08 | -109.38 | 7119 | |
| Richey | city | Montana | United States | 47.64 | -105.07 | 2591 | |
| Richey Trailer Court | city | Montana | United States | 47.64 | -105.07 | 2591 | |
| Richland | city | Montana | United States | 48.82 | -106.05 | 2696 | |
| Riders Trailer Court | city | Montana | United States | 45.86 | -111.32 | 4238 | |
| Ridge | city | Montana | United States | 45.05 | -105.02 | 4189 | |
| Ridgelawn | city | Montana | United States | 47.79 | -104.09 | 1902 | |
| Ridgeway | city | Montana | United States | 45.49 | -104.51 | 3349 | |
| Ridgewood Terrace | city | Montana | United States | 48.23 | -114.28 | 3349 | |
| Riebeling | city | Montana | United States | 47.50 | -112.15 | 4189 | |
| Riedel (historical) | city | Montana | United States | 47.98 | -109.36 | 3766 | |
| Rieder | city | Montana | United States | 46.27 | -112.10 | 5029 | |
| Rim Rock Colony | city | Montana | United States | 48.90 | -112.10 | 4189 | |
| Rimini | city | Montana | United States | 46.49 | -112.25 | 5400 | |
| Rimrock | city | Montana | United States | 45.80 | -108.70 | 3392 | |
| Ringling | city | Montana | United States | 46.27 | -110.81 | 5400 | |
| Ripley | city | Montana | United States | 48.38 | -115.45 | 2601 | |
| Rising Sun | city | Montana | United States | 48.70 | -113.52 | 4547 | |
| Riverbend | city | Montana | United States | 47.15 | -114.83 | 2798 | |
| Riverdale | city | Montana | United States | 47.35 | -111.59 | 3395 | |
| Rivers Edge Mobile Home Park | city | Montana | United States | 48.41 | -115.51 | 2509 | |
| Rivershore Mobile Home Park | city | Montana | United States | 47.47 | -111.31 | 3398 | |
| Riverside | city | Montana | United States | 44.66 | -111.07 | 6709 | |
| Riverside | city | Montana | United States | 46.43 | -108.57 | 3349 | |
| Riverside | city | Montana | United States | 46.27 | -114.16 | 3585 | |
| Riverside (historical) | city | Montana | United States | 48.26 | -106.74 | 2509 | |
| Riverside (historical) | city | Montana | United States | 48.92 | -115.18 | 2509 | |
| Riverside Addition | city | Montana | United States | 45.66 | -110.56 | 4501 | |
| Riverside Trailer Court | city | Montana | United States | 48.56 | -109.65 | 2509 | |
| Riverside Trailer Court | city | Montana | United States | 45.67 | -111.21 | 5029 | |
| Riverside Trailer Court | city | Montana | United States | 48.36 | -107.87 | 2509 | |
| Riverview | city | Montana | United States | 47.67 | -104.17 | 1932 | |
| Riverview Colony | city | Montana | United States | 48.18 | -111.03 | 3349 | |
| Riverview Trailer Park | city | Montana | United States | 47.19 | -114.89 | 2788 | |
| Roanwood | city | Montana | United States | 48.94 | -106.50 | 3349 | |
| Robere (historical) | city | Montana | United States | 48.33 | -112.55 | 4189 | |
| Roberts | city | Montana | United States | 45.36 | -109.17 | 4520 | |
| Robinson | city | Montana | United States | 46.47 | -110.67 | 6709 | |
| Robinsons Trailer Park | city | Montana | United States | 45.20 | -109.25 | 5869 | |
| Rochester | city | Montana | United States | 45.61 | -112.51 | 5869 | |
| Rock Crossing | city | Montana | United States | 48.49 | -104.35 | 1938 | |
| Rock Springs | city | Montana | United States | 46.82 | -106.25 | 3349 | |
| Rocker | city | Montana | United States | 46.00 | -112.61 | 5869 | |
| Rockford (historical) | city | Montana | United States | 46.94 | -109.62 | 4422 | |
| Rockport Colony | city | Montana | United States | 48.07 | -112.48 | 4412 | |
| Rocks Trailer Court | city | Montana | United States | 46.75 | -114.08 | 3349 | |
| Rockvale | city | Montana | United States | 45.52 | -108.86 | 3464 | |
| Rocky Boy's Agency | city | Montana | United States | 48.26 | -109.79 | 4189 | |
| Rocky Creek Trailer Court | city | Montana | United States | 45.68 | -111.00 | 5029 | |
| Rocky Crossing | city | Montana | United States | 48.27 | -110.07 | 2680 | |
| Rocky Mountain Trailer Park | city | Montana | United States | 45.03 | -110.71 | 5400 | |
| Rocky Point | city | Montana | United States | 47.73 | -114.18 | 2890 | |
| Rocky Point (historical) | city | Montana | United States | 47.60 | -108.44 | 2509 | |
| Rogers | city | Montana | United States | 47.54 | -111.00 | 3349 | |
| Rollins | city | Montana | United States | 47.91 | -114.20 | 2890 | |
| Romsett Summer Home Area | city | Montana | United States | 44.74 | -111.24 | 6709 | |
| Ronan | city | Montana | United States | 47.53 | -114.10 | 3349 | |
| Roosville | city | Montana | United States | 49.00 | -115.06 | 2791 | |
| Roscoe | city | Montana | United States | 45.35 | -109.50 | 5029 | |
| Rose Crossing | city | Montana | United States | 48.25 | -114.28 | 3349 | |
| Rose Hill (historical) | city | Montana | United States | 48.36 | -106.57 | 2598 | |
| Rosebud | city | Montana | United States | 46.27 | -106.44 | 2509 | |
| Ross Fork | city | Montana | United States | 47.08 | -109.69 | 4189 | |
| Ross Hall | city | Montana | United States | 47.21 | -107.94 | 2509 | |
| Rothiemay | city | Montana | United States | 46.55 | -109.26 | 4370 | |
| Round Butte | city | Montana | United States | 47.53 | -114.26 | 3349 | |
| Round Prairie | city | Montana | United States | 48.40 | -114.43 | 3349 | |
| Roundup | city | Montana | United States | 46.45 | -108.54 | 3349 | |
| Rowley | city | Montana | United States | 45.73 | -107.78 | 3349 | |
| Roy | city | Montana | United States | 47.33 | -108.96 | 3526 | |
| Roy-Winifred Junction | city | Montana | United States | 47.09 | -109.43 | 4189 | |
| Royston (historical) | city | Montana | United States | 45.75 | -112.52 | 7549 | |
| Ruby | city | Montana | United States | 45.33 | -112.09 | 5196 | |
| Ruby Gulch (historical) | city | Montana | United States | 47.11 | -109.30 | 4491 | |
| Rudyard | city | Montana | United States | 48.56 | -110.55 | 3349 | |
| Rumble Creek (historical) | city | Montana | United States | 47.56 | -109.50 | 3389 | |
| Rumsey | city | Montana | United States | 46.29 | -113.25 | 6709 | |
| Russell (historical) | city | Montana | United States | 48.06 | -111.06 | 3349 | |
| Rustle (historical) | city | Montana | United States | 47.19 | -109.21 | 5429 | |
| Ryegate | city | Montana | United States | 46.30 | -109.26 | 3769 |