North Dakota Citizen Population By County in 2021 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen population for North Dakota was 753,485 and represented 97.43% of the total North Dakota population.

Among all North Dakota counties, Cass had the highest citizen population (174.35K), followed by Burleigh (96.53K), and Grand Forks (70.25K).

In terms of percentages, Foster had the highest percentage of its population being citizens (100.00%), followed by Golden Valley (100.00%), and Oliver (100.00%).

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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North Dakota Citizen Voting-age Population By County in 2021

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

See this for other years:

North Dakota Citizen Population By County in 2021

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County	Citizen Population	% of County Population
Cass	174345	95.28
Burleigh	96525	98.60
Grand Forks	70245	96.09
Ward	67875	97.40
Williams	36550	95.03
Morton	32765	99.54
Stark	32160	98.32
Stutsman	21425	98.82
Richland	16490	99.67
McKenzie	13630	99.06
Rolette	12480	99.76
Ramsey	11480	98.63
Barnes	10680	98.25
Walsh	10460	98.40
McLean	9700	99.08
Mountrail	9540	98.20
Mercer	8310	98.87
Traill	7900	98.63
Pembina	6805	98.48
Bottineau	6295	97.75
Benson	6055	99.43
Ransom	5615	98.86
McHenry	5410	99.82
Dickey	4915	98.01
LaMoure	4155	99.52
Wells	4025	99.88
Pierce	3995	98.89
Sioux	3990	99.88
Dunn	3925	96.79
Sargent	3800	98.96
Cavalier	3690	99.06
Foster	3395	100.00
Emmons	3310	99.85
Bowman	3015	99.67
Nelson	2940	96.87
McIntosh	2530	98.44
Hettinger	2490	99.60
Kidder	2390	99.79
Eddy	2375	99.79
Grant	2320	98.72
Renville	2320	99.57
Griggs	2235	99.78
Adams	2205	98.66
Divide	2185	99.54
Burke	2150	98.85
Towner	2130	97.26
Steele	1865	99.73
Oliver	1850	100.00
Golden Valley	1810	100.00
Logan	1805	99.45
Sheridan	1325	99.62
Billings	830	98.81
Slope	775	100.00