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NAME 2020 Census 2010 Census
% Increase (Decrease)
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Clark County 790 982 -19.6%
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Butte County 2,574 2,891 -11.0%
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Lewis County 3,533 3,821 -7.5%
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Camas County 1,077 1,117 -3.6%
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Custer County 4,275 4,368 -2.1%
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Lincoln County 5,127 5,208 -1.6%
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Clearwater County 8,734 8,761 -0.3%
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Lemhi County 7,974 7,936 0.5%
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Power County 7,878 7,817 0.8%
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Gooding County 15,598 15,464 0.9%
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Caribou County 7,027 6,963 0.9%
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Fremont County 13,388 13,242 1.1%
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Idaho County 16,541 16,267 1.7%
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Benewah County 9,530 9,285 2.6%
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Washington County
 10,500 10,198 3.0%
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Shoshone County 13,169 12,765 3.2%
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Owyhee County 11,913 11,526 3.4%
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Bannock County 87,018 82,839 5.0%
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Bingham County 47,992 45,607 5.2%
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Elmore County 28,666 27,038 6.0%
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Latah County 39,517 37,244 6.1%
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Bear Lake County 6,372 5,986 6.4%
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Oneida County 4,564 4,286 6.5%
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Nez Perce County 42,090 39,265 7.2%
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Cassia County 24,655 22,952 7.4%
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Minidoka County 21,613 20,069 7.7%
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Boise County 7,610 7,028 8.3%
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Jerome County 24,237 22,374 8.3%
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Boundary County 12,056 10,972 9.9%
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Adams County 4,379 3,976 10.1%
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Franklin County 14,194 12,786 11.0%
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Payette County 25,386 22,623 12.2%
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Blaine County 24,272 21,376 13.5%
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Teton County 11,630 10,170 14.4%
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Gem County 19,123 16,719 14.4%
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Bonner County 47,110 40,877 15.2%
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Twin Falls County 90,046 77,230 16.6%
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#REF!#REF!#REF!
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Jefferson County 30,891 26,140 18.2%
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Bonneville County 123,964 104,234 18.9%
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Valley County 11,746 9,862 19.1%
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Canyon County 231,105 188,923 22.3%
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Kootenai County 171,362 138,494 23.7%
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Ada County 494,967 392,365 26.1%
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Madison County 52,913 37,536 41.0%
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