There are 8 cities in Coos County, New Hampshire.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Berlin | 1 | New Hampshire | 9,629 | 9,407 | 0.58% | 157 | 61.35 |
| Lancaster | 2 | New Hampshire | 2,628 | 1,892 | 7.53% | 883 | 2.98 |
| Gorham | 3 | New Hampshire | 2,138 | 1,948 | 2.3% | 1,270 | 1.68 |
| Whitefield | 4 | New Hampshire | 1,462 | 1,202 | 4.65% | 917 | 1.59 |
| Colebrook | 5 | New Hampshire | 1,163 | 1,037 | 2.83% | 444 | 2.62 |
| Bethlehem | 6 | New Hampshire | 959 | 1,061 | 0.1% | 587 | 1.63 |
| Groveton | 7 | New Hampshire | 764 | 914 | -4.62% | 371 | 2.06 |
| West Stewartstown | 8 | New Hampshire | 521 | 325 | 5.68% | 842 | 0.62 |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Berlin is the largest city in Coos County.
West Stewartstown is the smallest city in Coos County.
There are 8 cities in Coos County, New Hampshire.