22 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| New Gloucester | Cumberland County | 5,929 |
| Norway | Oxford County | 5,346 |
| North Berwick | York County | 5,304 |
| North Yarmouth | Cumberland County | 4,400 |
| Naples | Cumberland County | 4,124 |
| Norridgewock | Somerset County | 3,303 |
| Newport | Penobscot County | 3,165 |
| Nobleboro | Lincoln County | 1,917 |
| Newcastle | Lincoln County | 1,897 |
| Newburgh | Penobscot County | 1,756 |
| Newfield | York County | 1,684 |
| Northport | Waldo County | 1,649 |
| New Sharon | Franklin County | 1,610 |
| New Vineyard | Franklin County | 777 |
| New Portland | Somerset County | 763 |
| New Sweden | Aroostook County | 568 |
| New Limerick | Aroostook County | 560 |
| Newry | Oxford County | 429 |
| North Haven | Knox County | 420 |
| New Canada | Aroostook County | 308 |
| Northfield | Washington County | 177 |
| Nashville | Aroostook County | 26 |