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%−51%

02Claremont, NHNH13,032-3.0%−44%

03Keene, NHNH23,072-1.5%−361%

04Hampton, NHNH10,101-0.6%−104%

05Somersworth, NHNH12,171+0.8%−63%

06Suncook, NHNH5,432+2.3%−20%

07Hudson, NHNH7,469+2.7%+9%

08Concord, NHNH44,597+3.0%−77%

09Franklin, NHNH8,839+3.1%+156%

10Derry, NHNH21,339+3.9%−64%

11Milford, NHNH8,956+4.3%+23%

12Hanover, NHNH8,479+5.1%−78%

13Londonderry, NHNH12,225+5.5%–

14Manchester, NHNH116,818+5.5%−26%

15Nashua, NHNH92,435+5.6%−36%

16Portsmouth, NHNH23,028+5.7%−129%

17Laconia, NHNH17,246+5.8%+36%

18Durham, NHNH10,681+7.8%−438%

19Lebanon, NHNH15,481+8.6%+172%

20South Hooksett, NHNH5,902+8.7%−80%

21Dover, NHNH34,623+9.2%+25%

22Rochester, NHNH33,716+9.2%+34%

23Exeter, NHNH9,964+9.4%+342%

24Newmarket, NHNH5,679+9.4%+124%

25East Merrimack, NHNH5,081+23.3%+566%

26Hooksett, NHNH5,876+27.4%−37%

SHOWING 1–26 OF 26

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS