Idaho Citizen Population By County in 2012 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2012, the citizen population for Idaho was 1,505,300 and represented 96.01% of the total Idaho population.

Among all Idaho counties, Ada had the highest citizen population (380.67K), followed by Canyon (178.09K), and Kootenai (137.59K).

In terms of percentages, Adams had the highest percentage of its population being citizens (99.87%), followed by Oneida (99.65%), and Bear Lake (99.50%).

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 2012

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

See this for other years:

Idaho Citizen Population By County in 2012

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County	Citizen Population	% of County Population
Ada	380665	96.38
Canyon	178090	94.03
Kootenai	137590	98.93
Bonneville	100785	96.75
Bannock	81335	98.49
Twin Falls	72270	93.71
Bingham	42945	94.78
Bonner	40225	98.58
Nez Perce	38835	99.01
Latah	36330	97.23
Madison	36290	97.27
Jefferson	25285	97.48
Elmore	25140	94.32
Payette	21785	96.33
Cassia	21125	92.59
Jerome	19285	87.11
Blaine	18890	88.58
Minidoka	18175	91.29
Gem	16235	96.81
Idaho	16115	99.38
Gooding	13340	87.05
Shoshone	12695	99.22
Franklin	12570	98.67
Fremont	12455	94.90
Boundary	10685	98.43
Owyhee	10425	90.81
Valley	9695	98.98
Washington	9545	94.09
Benewah	9165	99.14
Teton	9075	90.71
Clearwater	8600	99.08
Lemhi	7850	99.49
Boise	6935	98.86
Power	6790	88.01
Caribou	6715	97.74
Bear Lake	5945	99.50
Lincoln	4720	91.38
Custer	4270	98.39
Oneida	4220	99.65
Adams	3970	99.87
Lewis	3765	98.56
Butte	2770	97.88
Camas	1190	93.33
Clark	515	66.03