| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ellsworth | 1 | 8,874 | 8,415 | 0.14% | 112 | 79 | City |
| Bar Harbor | 2 | 5,363 | 5,103 | 0.21% | 127 | 42 | Town |
| Bucksport | 3 | 5,064 | 4,944 | -0.04% | 98 | 52 | Town |
| Blue Hill | 4 | 2,781 | 2,790 | -0.61% | 45 | 62 | Town |
| Hancock | 5 | 2,623 | 2,469 | 1.16% | 87 | 30 | Town |
| Mount Desert | 6 | 2,219 | 2,152 | 0.23% | 60 | 37 | Town |
| Orland | 7 | 2,216 | 2,221 | -0.36% | 47 | 47 | Town |
| Deer Isle | 8 | 2,123 | 2,192 | -0.42% | 71 | 30 | Town |
| Southwest Harbor | 9 | 1,893 | 1,752 | 1.07% | 140 | 14 | Town |
| Lamoine | 10 | 1,817 | 1,714 | 0.33% | 102 | 18 | Town |
| Gouldsboro | 11 | 1,776 | 1,701 | 0.4% | 38 | 46 | Town |
| Surry | 12 | 1,702 | 1,633 | 0.59% | 46 | 37 | Town |
| Dedham | 13 | 1,680 | 1,652 | 0.42% | 43 | 39 | Town |
| Franklin | 14 | 1,679 | 1,571 | 0.78% | 46 | 36 | Town |
| Trenton | 15 | 1,665 | 1,593 | 0.54% | 92 | 18 | Town |
| Tremont | 16 | 1,557 | 1,546 | 0.32% | 92 | 17 | Town |
| Sullivan | 17 | 1,286 | 1,219 | 0.39% | 48 | 27 | Town |
| Castine | 18 | 1,258 | 1,317 | -3.97% | 162 | 8 | Town |
| Sedgwick | 19 | 1,199 | 1,200 | -0.33% | 44 | 27 | Town |
| Penobscot | 20 | 1,163 | 1,135 | 0.35% | 29 | 40 | Town |
| Stonington | 21 | 1,057 | 1,054 | -0.09% | 108 | 10 | Town |
| Brooksville | 22 | 930 | 933 | -0.32% | 30 | 31 | Town |
| Brooklin | 23 | 824 | 826 | -0.36% | 46 | 18 | Town |
| Otis | 24 | 664 | 667 | -0.45% | 27 | 25 | Town |
| Verona Island | 25 | 514 | 509 | -0.19% | 82 | 6 | Town |
| Mariaville | 26 | 503 | 473 | 0.2% | 13 | 39 | Town |
| Winter Harbor | 27 | 479 | 463 | -0.42% | 33 | 14 | Town |
| Eastbrook | 28 | 431 | 425 | 0% | 13 | 33 | Town |
| Swans Island | 29 | 355 | 356 | -0.28% | 29 | 12 | Town |
| Waltham | 30 | 344 | 333 | 0% | 12 | 30 | Town |
| Sorrento | 31 | 279 | 279 | 0% | 70 | 4 | Town |
| Amherst | 32 | 269 | 248 | 1.51% | 7.0 | 39 | Town |
| Cranberry Isles | 33 | 159 | 162 | -0.63% | 50 | 3 | Town |
| Aurora | 34 | 93 | 91 | 0% | 2.0 | 38 | Town |
| Osborn | 35 | 67 | 67 | 0% | 2.0 | 35 | Town |
| Great Pond | 36 | 60 | 62 | -1.64% | 2.0 | 38 | Town |
| Frenchboro | 37 | 31 | 31 | 0% | 6.0 | 5 | Town |
Ellsworth is the largest city in Hancock County, with a population of 8,874.
Frenchboro is the smallest city in Hancock County, with a population of 31.
There are 37 cities in Hancock County, Maine.