RANKING · 2000 CENSUS · 44 SHOWN OF 44

Fastest growing, Idaho counties · 2000

Idaho counties ranked by population growth 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 shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS –

01Boise County, IDID8,545+90.1%–

02Teton County, IDID13,254+74.4%–

03Kootenai County, IDID191,864+55.7%–

04Ada County, IDID546,141+46.2%–

05Canyon County, IDID275,123+45.9%–

06Blaine County, IDID25,517+40.1%–

07Bonner County, IDID54,420+38.4%–

08Elmore County, IDID29,465+37.4%–

09Camas County, IDID1,316+36.3%–

10Clark County, IDID783+34.1%–

11Gem County, IDID21,773+28.2%–

12Owyhee County, IDID12,661+26.8%–

13Valley County, IDID12,831+25.2%–

14Payette County, IDID27,824+25.2%–

15Franklin County, IDID15,889+22.7%–

16Lincoln County, IDID5,603+22.2%–

17Gooding County, IDID16,446+21.7%–

18Jerome County, IDID26,362+21.2%–

19Twin Falls County, IDID97,539+20.0%–

20Boundary County, IDID13,997+18.5%–

21Oneida County, IDID5,085+18.1%–

22Washington County, IDID11,583+16.7%–

23Madison County, IDID55,172+16.0%–

24Jefferson County, IDID35,297+15.8%–

25Benewah County, IDID10,508+15.5%–

26Bannock County, IDID91,591+14.4%–

27Bonneville County, IDID135,771+14.3%–

28Latah County, IDID41,842+14.1%–

29Lemhi County, IDID8,474+13.1%–

30Idaho County, IDID17,874+12.5%–

31Bingham County, IDID51,153+11.0%–

32Nez Perce County, IDID42,905+10.8%–

33Cassia County, IDID26,397+9.6%–

34Fremont County, IDID14,208+8.1%–

35Adams County, IDID5,013+6.8%–

36Lewis County, IDID3,704+6.6%–

37Power County, IDID8,246+6.4%–

38Bear Lake County, IDID6,727+5.4%–

39Custer County, IDID4,636+5.1%–

40Clearwater County, IDID9,118+5.0%–

41Caribou County, IDID7,252+4.9%–

42Minidoka County, IDID22,911+4.2%–

43Butte County, IDID2,783-0.7%–

44Shoshone County, IDID14,130-1.1%–

SHOWING 1–44 OF 44

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