RANKING · 2020 CENSUS · 26 SHOWN OF 26

Fastest shrinking, New Hampshire cities · 2020

New Hampshire cities with the steepest population decline from the 2010 census to 2020. This list covers the 26 cities in New Hampshire that qualify, ranked against each other statewide.

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New HampshireAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Berlin, NHNH9,502-6.2%+6.4 pts

02Claremont, NHNH13,032-3.0%+2.4 pts

03Keene, NHNH23,072-1.5%−2.1 pts

04Hampton, NHNH10,101-0.6%−14.8 pts

05Somersworth, NHNH12,171+0.8%−1.3 pts

06Suncook, NHNH5,432+2.3%−0.6 pts

07Hudson, NHNH7,469+2.7%+0.2 pts

08Concord, NHNH44,597+3.0%−10.0 pts

09Franklin, NHNH8,839+3.1%+1.9 pts

10Derry, NHNH21,339+3.9%−6.9 pts

11Milford, NHNH8,956+4.3%+0.8 pts

12Hanover, NHNH8,479+5.1%−18.1 pts

13Londonderry, NHNH12,225+5.5%–

14Manchester, NHNH116,818+5.5%−1.9 pts

15Nashua, NHNH92,435+5.6%−3.1 pts

16Portsmouth, NHNH23,028+5.7%+25.5 pts

17Laconia, NHNH17,246+5.8%+1.5 pts

18Durham, NHNH10,681+7.8%+10.0 pts

19Lebanon, NHNH15,481+8.6%+5.4 pts

20South Hooksett, NHNH5,902+8.7%−34.0 pts

21Dover, NHNH34,623+9.2%+1.8 pts

22Rochester, NHNH33,716+9.2%+2.3 pts

23Exeter, NHNH9,964+9.4%+7.3 pts

24Newmarket, NHNH5,679+9.4%+5.2 pts

25East Merrimack, NHNH5,081+23.3%+19.8 pts

26Hooksett, NHNH5,876+27.4%−16.4 pts

SHOWING 1–26 OF 26

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS