Idaho Citizen Population By County in 2019 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2019, the citizen population for Idaho was 1,656,805 and represented 96.45% of the total Idaho population.

Among all Idaho counties, Ada had the highest citizen population (443.87K), followed by Canyon (206.98K), and Kootenai (155.79K).

In terms of percentages, Butte had the highest percentage of its population being citizens (99.81%), followed by Valley (99.77%), and Idaho (99.60%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

You can see similar information for other states and by state for the United States.

You may also be interested in:
Idaho Citizen Voting-age Population By County in 2019

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

Idaho Citizen Population By County in 2019

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County	Citizen Population	% of County Population
Ada	443865	97.16
Canyon	206980	95.10
Kootenai	155790	99.03
Bonneville	111155	97.17
Bannock	83555	97.42
Twin Falls	79855	94.09
Bingham	44495	97.07
Bonner	43130	98.90
Nez Perce	40055	99.60
Madison	37930	97.01
Latah	37915	95.98
Jefferson	27680	97.00
Elmore	25365	94.84
Payette	22115	95.08
Cassia	21805	92.04
Jerome	20465	86.24
Blaine	19960	89.21
Minidoka	18770	90.65
Gem	16935	97.72
Idaho	16345	99.60
Gooding	13655	90.13
Franklin	13245	98.37
Shoshone	12535	99.41
Fremont	12405	95.28
Boundary	11550	97.51
Teton	10775	94.31
Owyhee	10720	92.81
Valley	10685	99.77
Washington	9585	95.33
Benewah	9095	99.51
Clearwater	8570	98.79
Lemhi	7745	98.73
Boise	7250	98.24
Power	6850	89.31
Caribou	6825	98.13
Bear Lake	5925	98.75
Lincoln	4675	87.38
Oneida	4290	97.83
Custer	4150	99.52
Adams	4075	99.51
Lewis	3800	98.96
Butte	2575	99.81
Camas	1035	98.57
Clark	640	69.94