| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Nagos | city | Montana | United States | 46.99 | -114.11 | 3421 | |
| Naismith | city | Montana | United States | 48.39 | -111.77 | 3349 | |
| Nashua | city | Montana | United States | 48.13 | -106.36 | 2037 | |
| Navajo | city | Montana | United States | 48.79 | -105.06 | 2509 | |
| Navy | city | Montana | United States | 45.48 | -112.70 | 5029 | |
| Negro Prairie (historical) | city | Montana | United States | 48.12 | -114.02 | 3349 | |
| Neihart | city | Montana | United States | 46.93 | -110.74 | 5869 | |
| Nelson | city | Montana | United States | 46.82 | -111.81 | 4399 | |
| Nelson (historical) | city | Montana | United States | 47.10 | -109.24 | 5252 | |
| Nelsons Crossing (historical) | city | Montana | United States | 45.79 | -111.25 | 4412 | |
| Nelsons Trailer Court | city | Montana | United States | 45.69 | -111.06 | 5029 | |
| New Chicago | city | Montana | United States | 46.63 | -113.14 | 4189 | |
| New Deal (historical) | city | Montana | United States | 48.02 | -106.46 | 2509 | |
| New Haven (historical) | city | Montana | United States | 46.46 | -111.99 | 4432 | |
| New Miami Colony | city | Montana | United States | 48.19 | -112.28 | 4189 | |
| New Rockport Colony | city | Montana | United States | 47.86 | -112.02 | 3681 | |
| New Year | city | Montana | United States | 47.17 | -109.29 | 5029 | |
| Newcomb | city | Montana | United States | 45.92 | -112.52 | 5869 | |
| Newlon Junction | city | Montana | United States | 47.66 | -104.20 | 1955 | |
| Newton | city | Montana | United States | 45.98 | -108.06 | 3349 | |
| Newtown | city | Montana | United States | 48.48 | -108.76 | 2509 | |
| Niarada | city | Montana | United States | 47.81 | -114.60 | 3349 | |
| Nibbe | city | Montana | United States | 45.98 | -108.03 | 2933 | |
| Nicholia (historical) | city | Montana | United States | 44.52 | -112.89 | 7549 | |
| Nichols | city | Montana | United States | 46.26 | -106.82 | 2591 | |
| Nickwall | city | Montana | United States | 48.05 | -105.31 | 2093 | |
| Nimrod | city | Montana | United States | 48.24 | -113.57 | 4189 | |
| Nimrod | city | Montana | United States | 46.70 | -113.48 | 4189 | |
| Nine-mile | city | Montana | United States | 45.91 | -112.47 | 5869 | |
| Ninemile | city | Montana | United States | 47.02 | -114.41 | 3349 | |
| Nissler | city | Montana | United States | 46.00 | -112.64 | 5400 | |
| Noble | city | Montana | United States | 46.52 | -111.49 | 4189 | |
| Nohly | city | Montana | United States | 48.00 | -104.09 | 2050 | |
| Norheim (historical) | city | Montana | United States | 48.99 | -109.27 | 2883 | |
| Norris | city | Montana | United States | 45.57 | -111.69 | 5029 | |
| North Browning | city | Montana | United States | 48.57 | -113.01 | 4363 | |
| North Fork | city | Montana | United States | 48.59 | -109.11 | 2509 | |
| North Glastonbury | city | Montana | United States | 45.36 | -110.76 | 5029 | |
| North Great Falls (historical) | city | Montana | United States | 47.53 | -111.26 | 3402 | |
| North Harlem Colony | city | Montana | United States | 48.59 | -108.76 | 2598 | |
| North Walkerville (historical) | city | Montana | United States | 46.03 | -112.53 | 6709 | |
| North West Mobile Home Park | city | Montana | United States | 46.32 | -114.15 | 3494 | |
| Northeast Annexation Trailer Court | city | Montana | United States | 45.70 | -111.03 | 5029 | |
| Northridge Heights | city | Montana | United States | 48.22 | -114.33 | 3349 | |
| Norwegian Settlement (historical) | city | Montana | United States | 46.11 | -109.98 | 5118 | |
| Novary (historical) | city | Montana | United States | 47.06 | -109.04 | 4189 | |
| Noxon | city | Montana | United States | 48.00 | -115.78 | 2509 | |
| Number Seven | city | Montana | United States | 47.40 | -111.15 | 3599 | |
| Nyack | city | Montana | United States | 48.44 | -113.81 | 3398 | |
| Nye | city | Montana | United States | 45.44 | -109.81 | 5029 |