54 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lebanon | 1 | 16,038 | 14,298 | 2.22% | 398 | 40.30 | City |
| Lebanon city | 2 | 15,988 | 14,298 | 2.06% | 397 | 40.30 | City |
| Hanover town | 3 | 12,083 | 11,886 | -0.52% | 246 | 49.03 | Town |
| Hanover | 4 | 8,134 | 8,744 | -0.4% | 1,799 | 4.52 | CDP |
| Plymouth town | 5 | 6,566 | 6,705 | -0.42% | 234 | 28.10 | Town |
| Littleton town | 6 | 5,942 | 6,003 | -0.78% | 119 | 49.96 | Town |
| Littleton | 7 | 4,631 | 4,294 | 0.32% | 548 | 8.45 | CDP |
| Haverhill town | 8 | 4,552 | 4,584 | -0.52% | 89 | 50.99 | Town |
| Plymouth | 9 | 4,421 | 4,281 | -0.05% | 753 | 5.88 | CDP |
| Enfield town | 10 | 4,409 | 4,457 | -0.85% | 109 | 40.30 | Town |
| Canaan town | 11 | 3,773 | 3,794 | -0.42% | 71 | 53.36 | Town |
| Campton town | 12 | 3,419 | 3,347 | -0.09% | 66 | 51.84 | Town |
| Bristol town | 13 | 3,240 | 3,259 | -0.64% | 194 | 16.74 | Town |
| Thornton town | 14 | 2,908 | 2,708 | 1.22% | 58 | 50.09 | Town |
| Bethlehem town | 15 | 2,528 | 2,504 | -0.32% | 28 | 90.60 | Town |
| Enfield | 16 | 2,214 | 2,059 | 2.07% | 859 | 2.58 | CDP |
| Bristol | 17 | 2,197 | 1,970 | 1.57% | 548 | 4.01 | CDP |
| Holderness town | 18 | 2,014 | 2,004 | -0.35% | 66 | 30.35 | Town |
| Ashland town | 19 | 1,948 | 1,942 | -0.41% | 174 | 11.23 | Town |
| Alexandria town | 20 | 1,736 | 1,775 | -0.97% | 40 | 43.15 | Town |
| Lyme town | 21 | 1,713 | 1,742 | -0.75% | 32 | 53.82 | Town |
| Lincoln town | 22 | 1,638 | 1,630 | -0.18% | 13 | 130.46 | Town |
| Lisbon town | 23 | 1,621 | 1,626 | -0.55% | 62 | 26.24 | Town |
| Ashland | 24 | 1,589 | 1,630 | 1.47% | 1,193 | 1.33 | CDP |
| Rumney town | 25 | 1,482 | 1,492 | -0.54% | 36 | 41.70 | Town |
| Woodstock town | 26 | 1,420 | 1,433 | -0.7% | 24 | 58.76 | Town |
| Grafton town | 27 | 1,416 | 1,382 | 0.07% | 34 | 41.47 | Town |
| Woodsville | 28 | 1,380 | 1,152 | 1.25% | 746 | 1.85 | CDP |
| Orford town | 29 | 1,235 | 1,240 | -0.4% | 27 | 46.50 | Town |
| Bridgewater town | 30 | 1,175 | 1,159 | -0.34% | 55 | 21.49 | Town |
| Franconia town | 31 | 1,137 | 1,085 | 0.26% | 17 | 65.51 | Town |
| Bath town | 32 | 1,105 | 1,077 | -0.09% | 29 | 37.71 | Town |
| North Haverhill | 33 | 1,024 | 1,155 | 7.11% | 285 | 3.59 | CDP |
| Lincoln | 34 | 1,023 | 1,086 | 0.2% | 380 | 2.69 | CDP |
| Bethlehem | 35 | 953 | 1,061 | -0.1% | 583 | 1.63 | CDP |
| Monroe town | 36 | 854 | 861 | -0.93% | 38 | 22.34 | Town |
| Lisbon | 37 | 845 | 843 | -1.05% | 254 | 3.33 | CDP |
| Wentworth town | 38 | 839 | 846 | -0.59% | 20 | 41.56 | Town |
| Warren town | 39 | 824 | 830 | -0.6% | 17 | 48.53 | Town |
| Piermont town | 40 | 764 | 770 | -0.52% | 20 | 38.44 | Town |
| Sugar Hill town | 41 | 702 | 648 | 1.74% | 41 | 17.05 | Town |
| Hebron town | 42 | 664 | 638 | 0.45% | 39 | 17.01 | Town |
| Mountain Lakes | 43 | 624 | 643 | 1.46% | 177 | 3.52 | CDP |
| Lyman town | 44 | 579 | 587 | -0.86% | 20 | 28.39 | Town |
| Groton town | 45 | 578 | 566 | -0.17% | 14 | 40.70 | Town |
| North Woodstock | 46 | 533 | 580 | 0% | 330 | 1.62 | CDP |
| Waterville Valley town | 47 | 518 | 507 | 0.19% | 8 | 64.33 | Town |
| Landaff town | 48 | 440 | 444 | -0.68% | 16 | 28.34 | Town |
| Benton town | 49 | 359 | 372 | 1.41% | 7 | 48.20 | Town |
| Dorchester town | 50 | 336 | 337 | -0.88% | 8 | 44.61 | Town |
| Easton town | 51 | 301 | 289 | 0.33% | 10 | 31.14 | Town |
| Orange town | 52 | 280 | 279 | -0.36% | 12 | 23.07 | Town |
| Ellsworth town | 53 | 90 | 92 | -1.1% | 4 | 21.41 | Town |
| Canaan | 54 | 85 | 264 | -25.44% | 124 | 0.68 | CDP |
Lebanon is the largest city in Grafton County, with a population of 16,038.
Canaan is the smallest city in Grafton County.
There are 54 cities in Grafton County, New Hampshire.