Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | South Portland (city), ME | 26,498 |
| 2 | Biddeford (city), ME | 22,552 |
| 3 | Westbrook (city), ME | 20,400 |
| 4 | Saco (city), ME | 20,381 |
| 5 | Old Orchard Beach (CDP), ME | 8,960 |
| 6 | Gorham (CDP), ME | 7,469 |
| 7 | Yarmouth (CDP), ME | 6,125 |
| 8 | Oak Hill (CDP), ME | 5,846 |
| 9 | Kennebunk (CDP), ME | 5,776 |
| 10 | North Windham (CDP), ME | 5,274 |
| 11 | Cumberland Center (CDP), ME | 2,739 |
| 12 | Dunstan (CDP), ME | 2,083 |
| 13 | Falmouth (CDP), ME | 1,988 |
| 14 | Freeport (CDP), ME | 1,700 |
| 15 | Falmouth Foreside (CDP), ME | 1,554 |
| 16 | South Windham (CDP), ME | 1,215 |
| 17 | West Kennebunk (CDP), ME | 1,191 |
| 18 | Gray (CDP), ME | 887 |
| 19 | Little Falls (CDP), ME | 863 |
| 20 | Cousins Island (CDP), ME | 528 |