Idaho Citizen Voting-age Population By County in 2024 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2024, the citizen voting-age population for Idaho was 1,411,149 and represented 72.96% of the total Idaho population.

Among all Idaho counties, Ada had the highest citizen voting-age population (392.09K), followed by Canyon (172.39K), and Kootenai (140.01K).

In terms of percentages, Custer had the highest percentage of its population being citizens of voting-age (85.31%), followed by Boise (83.74%), and Clearwater (83.63%).

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

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

You may also be interested in:
Idaho Citizen Population By County in 2024

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

See this for other years:

Idaho Citizen Voting-age Population By County in 2024

Items per page:

0 of 0

County	Citizen Voting-age Population	% of County Population
Ada	392085	75.56
Canyon	172390	68.74
Kootenai	140010	76.93
Bonneville	87997	67.94
Bannock	65494	73.22
Twin Falls	65287	69.65
Madison	41299	75.62
Bonner	40585	79.50
Bingham	33679	67.82
Nez Perce	33461	78.37
Latah	32511	79.20
Jefferson	21704	65.47
Elmore	20795	70.92
Payette	19217	71.78
Blaine	18333	73.48
Cassia	15998	62.77
Gem	15464	75.01
Jerome	14719	58.47
Minidoka	14637	65.91
Idaho	13844	79.42
Shoshone	10813	78.43
Franklin	10348	68.74
Gooding	10327	64.82
Fremont	10242	73.45
Valley	9973	80.49
Boundary	9612	72.99
Teton	8760	70.50
Owyhee	8490	67.90
Washington	8261	74.14
Benewah	7888	77.75
Clearwater	7537	83.63
Boise	6925	83.74
Lemhi	6823	82.68
Power	5111	62.84
Caribou	5026	70.22
Bear Lake	4786	71.99
Adams	3900	82.23
Custer	3814	85.31
Oneida	3460	72.58
Lincoln	3421	63.85
Lewis	2858	77.56
Butte	1957	72.97
Camas	814	72.29
Clark	479	56.42