RANKING · 2000 CENSUS · 44 SHOWN OF 44

Fastest shrinking, Idaho counties · 2000

Idaho counties with the steepest population decline from the 1990 census to 2000. This list covers the 44 counties in Idaho that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS –

01Shoshone County, IDID14,130-1.1%–

02Butte County, IDID2,783-0.7%–

03Minidoka County, IDID22,911+4.2%–

04Caribou County, IDID7,252+4.9%–

05Clearwater County, IDID9,118+5.0%–

06Custer County, IDID4,636+5.1%–

07Bear Lake County, IDID6,727+5.4%–

08Power County, IDID8,246+6.4%–

09Lewis County, IDID3,704+6.6%–

10Adams County, IDID5,013+6.8%–

11Fremont County, IDID14,208+8.1%–

12Cassia County, IDID26,397+9.6%–

13Nez Perce County, IDID42,905+10.8%–

14Bingham County, IDID51,153+11.0%–

15Idaho County, IDID17,874+12.5%–

16Lemhi County, IDID8,474+13.1%–

17Latah County, IDID41,842+14.1%–

18Bonneville County, IDID135,771+14.3%–

19Bannock County, IDID91,591+14.4%–

20Benewah County, IDID10,508+15.5%–

21Jefferson County, IDID35,297+15.8%–

22Madison County, IDID55,172+16.0%–

23Washington County, IDID11,583+16.7%–

24Oneida County, IDID5,085+18.1%–

25Boundary County, IDID13,997+18.5%–

26Twin Falls County, IDID97,539+20.0%–

27Jerome County, IDID26,362+21.2%–

28Gooding County, IDID16,446+21.7%–

29Lincoln County, IDID5,603+22.2%–

30Franklin County, IDID15,889+22.7%–

31Payette County, IDID27,824+25.2%–

32Valley County, IDID12,831+25.2%–

33Owyhee County, IDID12,661+26.8%–

34Gem County, IDID21,773+28.2%–

35Clark County, IDID783+34.1%–

36Camas County, IDID1,316+36.3%–

37Elmore County, IDID29,465+37.4%–

38Bonner County, IDID54,420+38.4%–

39Blaine County, IDID25,517+40.1%–

40Canyon County, IDID275,123+45.9%–

41Ada County, IDID546,141+46.2%–

42Kootenai County, IDID191,864+55.7%–

43Teton County, IDID13,254+74.4%–

44Boise County, IDID8,545+90.1%–

SHOWING 1–44 OF 44

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