37 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rumford town | 1 | 5,999 | 5,872 | 0.05% | 88 | 68.55 | Town |
| Paris town | 2 | 5,431 | 5,186 | 0.59% | 133 | 40.77 | Town |
| Norway town | 3 | 5,396 | 5,090 | 1.01% | 120 | 45.04 | Town |
| Oxford town | 4 | 4,442 | 4,235 | 0.79% | 115 | 38.72 | Town |
| Fryeburg town | 5 | 3,617 | 3,370 | 1.17% | 62 | 58.34 | Town |
| Mexico town | 6 | 2,808 | 2,755 | 0.18% | 120 | 23.34 | Town |
| Bethel town | 7 | 2,786 | 2,510 | 2.05% | 43 | 64.61 | Town |
| Dixfield town | 8 | 2,341 | 2,254 | 0.6% | 57 | 41.27 | Town |
| South Paris | 9 | 2,193 | 1,842 | -0.23% | 566 | 3.88 | CDP |
| Buckfield town | 10 | 2,127 | 1,987 | 1.05% | 57 | 37.52 | Town |
| Otisfield town | 11 | 1,904 | 1,858 | 0.32% | 48 | 39.93 | Town |
| West Paris town | 12 | 1,792 | 1,770 | 0.06% | 74 | 24.25 | Town |
| Brownfield town | 13 | 1,742 | 1,643 | 1.04% | 39 | 44.47 | Town |
| Hiram town | 14 | 1,722 | 1,613 | 0.94% | 46 | 37.55 | Town |
| Porter town | 15 | 1,675 | 1,609 | 0.66% | 53 | 31.52 | Town |
| Waterford town | 16 | 1,649 | 1,574 | 0.49% | 33 | 50.26 | Town |
| Peru town | 17 | 1,537 | 1,487 | 0.79% | 33 | 46.68 | Town |
| Woodstock town | 18 | 1,461 | 1,358 | 1.32% | 32 | 45.69 | Town |
| Hebron town | 19 | 1,287 | 1,222 | 0.63% | 57 | 22.40 | Town |
| Hartford town | 20 | 1,278 | 1,207 | 0.95% | 29 | 43.87 | Town |
| Denmark town | 21 | 1,243 | 1,202 | 0.49% | 27 | 46.12 | Town |
| Lovell town | 22 | 1,195 | 1,106 | 1.53% | 28 | 43.15 | Town |
| Canton town | 23 | 1,148 | 1,129 | 1.41% | 39 | 29.12 | Town |
| Sumner town | 24 | 1,016 | 996 | 0.2% | 23 | 44.27 | Town |
| Andover town | 25 | 907 | 754 | 0.44% | 16 | 57.42 | Town |
| Greenwood town | 26 | 774 | 773 | -0.26% | 19 | 41.68 | Town |
| Bethel | 27 | 701 | 667 | 7.19% | 431 | 1.63 | CDP |
| Stow town | 28 | 462 | 398 | 2.44% | 19 | 24.21 | Town |
| Newry town | 29 | 435 | 411 | 0.93% | 7 | 61.52 | Town |
| Sweden town | 30 | 428 | 405 | 0.94% | 15 | 28.82 | Town |
| Roxbury town | 31 | 371 | 365 | 0.27% | 9 | 42.91 | Town |
| Hanover town | 32 | 309 | 286 | 1.31% | 44 | 7.04 | Town |
| Stoneham town | 33 | 271 | 259 | 0.37% | 8 | 33.84 | Town |
| Gilead town | 34 | 201 | 193 | 0.5% | 11 | 18.88 | Town |
| Byron town | 35 | 105 | 104 | 0% | 2 | 51.81 | Town |
| Upton town | 36 | 69 | 68 | 0% | 2 | 39.51 | Town |
| Lincoln plantation | 37 | 45 | 42 | 2.27% | 1 | 32.66 | Plantation |
Rumford town is the largest city in Oxford County, with a population of 5,999.
Lincoln plantation is the smallest city in Oxford County.
There are 37 cities in Oxford County, Maine.