Idaho Counties Map

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Hover/click a county for data.

Name 2022 Population Growth Since 2010 Land Area (mi²) Density (mi²)
Ada County520,05632.21%1,052.63494.06
Adams County4,47412.92%1,363.063.28
Bannock County91,2109.87%1,111.9982.02
Bear Lake County6,3686.68%974.886.53
Benewah County9,5382.67%776.6212.28
Bingham County48,8576.76%2,093.8823.33
Blaine County23,77111.63%2,639.929.00
Boise County8,35919.33%1,899.244.40
Bonner County48,84119.41%1,735.1828.15
Bonneville County126,91621.25%1,866.0768.01
Boundary County12,93217.57%1,268.6510.19
Butte County2,627-9.88%2,236.201.17
Camas County1,061-4.93%1,074.490.99
Canyon County249,68831.87%587.37425.10
Caribou County7,5097.67%1,764.024.26
Cassia County24,7477.22%2,564.649.65
Clark County827-15.61%1,763.430.47
Clearwater County8,7500.26%2,457.203.56
Custer County4,5103.51%4,920.130.92
Elmore County27,9583.09%3,074.749.09
Franklin County14,39212.60%663.6021.69
Fremont County12,931-2.22%1,863.766.94
Gem County19,68717.98%560.9035.10
Gooding County15,368-0.67%728.9721.08
Idaho County17,2405.70%8,477.262.03
Jefferson County31,26919.24%1,093.5128.60
Jerome County25,45013.40%597.1942.62
Kootenai County179,16129.03%1,244.13144.01
Latah County40,9459.90%1,076.0038.05
Lemhi County8,3124.51%4,563.291.82
Lewis County3,8560.94%478.808.05
Lincoln County5,2701.23%1,201.394.39
Madison County41,84511.31%469.2289.18
Minidoka County21,9999.54%757.5929.04
Nez Perce County40,8643.94%848.0948.18
Oneida County4,73810.44%1,199.793.95
Owyhee County12,2857.08%7,665.541.60
Payette County25,28311.69%406.8762.14
Power County7,624-3.15%1,404.275.43
Shoshone County13,1583.21%2,629.775.00
Teton County13,61534.12%449.4630.29
Twin Falls County89,42515.32%1,921.2246.55
Valley County12,50527.76%3,664.523.41
Washington County10,4312.50%1,452.947.18

Counties in Idaho

  1. Idaho Department of Labor
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)

Sources