| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Waldoboro | 1 | 5,336 | 5,147 | 0.23% | 75 | 71 | Town |
| Wiscasset | 2 | 4,018 | 3,753 | 0.5% | 163 | 25 | Town |
| Boothbay | 3 | 3,171 | 3,002 | 0.51% | 144 | 22 | Town |
| Bristol | 4 | 2,969 | 2,845 | 0% | 87 | 34 | Town |
| Jefferson | 5 | 2,747 | 2,555 | 0.7% | 52 | 53 | Town |
| Whitefield | 6 | 2,403 | 2,403 | -0.29% | 51 | 47 | Town |
| Damariscotta | 7 | 2,286 | 2,294 | -0.44% | 184 | 12 | Town |
| Boothbay Harbor | 8 | 2,109 | 2,035 | 0.29% | 370 | 6 | Town |
| Nobleboro | 9 | 1,927 | 1,792 | 0.94% | 102 | 19 | Town |
| Newcastle | 10 | 1,919 | 1,851 | 0.21% | 66 | 29 | Town |
| Dresden | 11 | 1,793 | 1,723 | 0.06% | 59 | 30 | Town |
| Edgecomb | 12 | 1,213 | 1,187 | -0.08% | 67 | 18 | Town |
| South Bristol | 13 | 1,134 | 1,126 | -0.26% | 87 | 13 | Town |
| Bremen | 14 | 842 | 815 | 0% | 51 | 16 | Town |
| Westport Island | 15 | 749 | 716 | -0.13% | 85 | 9 | Town |
| Alna | 16 | 730 | 710 | -0.27% | 35 | 21 | Town |
| Southport | 17 | 634 | 622 | 0% | 118 | 5 | Town |
| Somerville | 18 | 623 | 604 | 0% | 28 | 22 | Town |
| Monhegan | 19 | 61 | 62 | -1.61% | 72 | 1 | Plantation |
| Hibberts gore | 20 | 0 | 0 | 0 | 1 | Township |
Waldoboro is the largest city in Lincoln County, with a population of 5,336.
Hibberts gore is the smallest city in Lincoln County, with a population of 0.
There are 20 cities in Lincoln County, Maine.