RANKING · 2020 CENSUS · 36 SHOWN OF 36

Fastest shrinking, Idaho cities

Idaho cities with the steepest population decline since the prior decennial census. This list covers the 36 cities in Idaho that qualify, ranked against each other statewide.

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SAME RANKING BYCounties States Metros

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Weiser, IDID6,249+2.2%−87%

02Blackfoot, IDID13,361+3.8%−53%

03Pocatello, IDID58,771+3.8%−68%

04Moscow, IDID26,721+6.9%−54%

05Lewiston, IDID34,717+7.2%−28%

06Preston, IDID6,177+7.4%−72%

07Shelley, IDID5,303+8.5%+9%

08Payette, IDID8,813+9.3%−64%

09Rupert, IDID6,460+9.5%+173%

10Chubbuck, IDID16,823+11.8%−49%

11Garden City, IDID13,047+12.2%−82%

12Mountain Home, IDID16,779+12.5%−69%

13Burley, IDID12,409+13.1%+91%

14Jerome, IDID13,731+13.4%−30%

15Idaho Falls, IDID71,785+14.1%−9%

16Boise City, IDID238,429+14.6%−69%

17Hailey, IDID10,053+15.1%−78%

18Emmett, IDID8,900+16.6%−14%

19Hayden, IDID17,363+17.1%−88%

20Sandpoint, IDID10,645+17.3%−44%

21Twin Falls, IDID56,216+17.4%−30%

22Nampa, IDID120,384+22.9%−72%

23Coeur d'Alene, IDID58,179+23.8%−41%

24Rigby, IDID5,757+27.7%+134%

25Ammon, IDID20,119+28.1%+18%

26Fruitland, IDID7,213+29.6%−48%

27Caldwell, IDID76,629+29.8%−28%

28Rathdrum, IDID13,227+34.9%−75%

29Post Falls, IDID46,715+39.6%−71%

30Kimberly, IDID5,798+41.7%+295%

31Eagle, IDID34,658+52.4%−78%

32Rexburg, IDID40,334+54.6%+164%

33Meridian, IDID142,988+56.7%−79%

34Kuna, IDID31,525+57.9%−67%

35Middleton, IDID12,600+70.6%+31%

36Star, IDID20,874+91.9%–

SHOWING 1–36 OF 36

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES