Idaho Citizen Population By County in 2023 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2023, the citizen population for Idaho was 1,834,570 and represented 96.90% of the total Idaho population.

Among all Idaho counties, Ada had the highest citizen population (494.30K), followed by Canyon (231.50K), and Kootenai (176.13K).

In terms of percentages, Benewah had the highest percentage of its population being citizens (99.85%), followed by Lewis (99.73%), and Camas (99.57%).

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.

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Idaho Citizen Voting-age Population By County in 2023

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

See this for other years:

Idaho Citizen Population By County in 2023

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County	Citizen Population	% of County Population
Ada	494300	97.29
Canyon	231500	95.50
Kootenai	176125	99.09
Bonneville	124875	98.28
Twin Falls	88395	95.96
Bannock	86995	98.35
Madison	51470	96.06
Bonner	48790	98.66
Bingham	47660	97.28
Nez Perce	42205	99.36
Latah	39270	97.41
Jefferson	31375	97.33
Elmore	27685	95.32
Payette	25465	97.23
Cassia	23310	92.63
Blaine	22250	90.52
Jerome	21160	85.36
Minidoka	20610	94.02
Gem	19230	96.85
Idaho	16975	99.15
Franklin	14520	98.68
Gooding	14305	90.88
Shoshone	13485	99.30
Fremont	13265	96.83
Boundary	12250	96.50
Valley	12065	99.42
Owyhee	11365	92.51
Teton	11185	92.44
Washington	10455	96.23
Benewah	9900	99.85
Clearwater	8805	98.71
Lemhi	8130	99.57
Boise	7940	98.70
Power	7385	92.08
Caribou	6985	98.10
Bear Lake	6480	98.93
Lincoln	4775	90.52
Oneida	4660	99.57
Adams	4570	99.35
Custer	4390	99.55
Lewis	3640	99.73
Butte	2585	97.36
Camas	1150	99.57
Clark	655	84.52