| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lewiston | 1 | 38,911 | 37,110 | 0.12% | 1,140 | 34 | City |
| Auburn | 2 | 25,651 | 24,085 | 0.83% | 432 | 59 | City |
| Lisbon | 3 | 9,974 | 9,730 | 0.55% | 437 | 23 | Town |
| Turner | 4 | 6,213 | 5,824 | 1.4% | 105 | 59 | Town |
| Poland | 5 | 6,145 | 5,904 | 0.77% | 146 | 42 | Town |
| Sabattus | 6 | 5,522 | 5,039 | 2.32% | 215 | 26 | Town |
| Greene | 7 | 4,595 | 4,375 | 0.97% | 142 | 32 | Town |
| Durham | 8 | 4,451 | 4,181 | 1.18% | 116 | 38 | Town |
| Mechanic Falls | 9 | 3,349 | 3,108 | 1.92% | 305 | 11 | Town |
| Livermore Falls | 10 | 3,289 | 3,060 | 1.86% | 167 | 20 | Town |
| Minot | 11 | 2,891 | 2,770 | 0.87% | 98 | 30 | Town |
| Leeds | 12 | 2,444 | 2,263 | 1.58% | 61 | 40 | Town |
| Livermore | 13 | 2,255 | 2,126 | 1.17% | 60 | 38 | Town |
| Wales | 14 | 1,684 | 1,606 | 0.66% | 106 | 16 | Town |
Lewiston is the largest city in Androscoggin County, with a population of 38,911.
Wales is the smallest city in Androscoggin County, with a population of 1,684.
There are 14 cities in Androscoggin County, Maine.