Kansas 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 Kansas was 2,813,775 and represented 95.96% of the total Kansas population.

Among all Kansas counties, Johnson had the highest citizen population (578.65K), followed by Sedgwick (497.09K), and Shawnee (174.77K).

In terms of percentages, Mitchell had the highest percentage of its population being citizens (100.00%), followed by Rooks (100.00%), and Wallace (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.

You may also be interested in:
Kansas Citizen Voting-age Population By County in 2021

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

See this for other years:

Kansas Citizen Population By County in 2021

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County	Citizen Population	% of County Population
Johnson	578650	95.62
Sedgwick	497090	95.51
Shawnee	174770	97.61
Wyandotte	148085	87.97
Douglas	113760	95.85
Leavenworth	80355	98.47
Riley	69185	95.30
Butler	66365	98.46
Reno	61445	98.99
Saline	53165	97.77
Crawford	38500	98.67
Geary	35300	96.67
Cowley	34130	98.16
Miami	33785	99.46
Harvey	33760	99.28
Finney	33120	86.39
Montgomery	31400	99.12
Lyon	30245	93.58
McPherson	29655	98.65
Ford	28620	83.14
Ellis	28385	98.24
Franklin	25635	98.77
Pottawatomie	24815	98.94
Barton	24745	96.25
Sumner	22440	99.27
Labette	20160	99.70
Cherokee	19365	99.28
Dickinson	18525	99.76
Jefferson	18290	99.46
Seward	18255	82.14
Atchison	16275	99.36
Osage	15755	99.65
Neosho	15580	97.83
Bourbon	14320	99.38
Jackson	13085	98.50
Allen	12335	98.25
Marion	11810	99.45
Nemaha	10180	99.85
Marshall	9980	99.85
Linn	9640	99.74
Brown	9510	99.79
Rice	9235	97.57
Pratt	9175	99.03
Cloud	8925	98.78
Wilson	8700	99.83
Coffey	8320	99.52
Clay	8055	99.63
Anderson	7770	99.62
Thomas	7645	96.77
Doniphan	7520	99.60
Kingman	7415	98.93
Wabaunsee	6875	99.93
Russell	6700	99.33
Grant	6385	85.94
Ellsworth	6345	99.06
Pawnee	6305	99.21
Greenwood	6030	99.67
Mitchell	5885	100.00
Sherman	5770	96.73
Ottawa	5735	99.22
Harper	5440	98.46
Norton	5415	99.27
Washington	5385	97.38
Morris	5305	98.70
Gray	5235	91.52
Phillips	4980	99.20
Rooks	4975	100.00
Stevens	4845	91.07
Scott	4775	92.45
Republic	4685	99.58
Barber	4115	98.45
Stafford	3955	96.35
Meade	3795	92.79
Kearny	3725	92.66
Smith	3575	99.58
Osborne	3500	99.72
Chautauqua	3380	99.56
Haskell	3305	86.86
Woodson	3160	100.00
Lincoln	2945	99.83
Jewell	2910	99.49
Rush	2865	99.31
Trego	2810	99.47
Decatur	2765	99.10
Edwards	2765	95.02
Gove	2765	99.64
Logan	2745	98.92
Morton	2605	94.90
Ness	2575	94.84
Chase	2545	98.45
Cheyenne	2545	96.22
Rawlins	2495	98.62
Elk	2460	99.80
Graham	2440	99.80
Kiowa	2420	98.57
Sheridan	2420	98.37
Hamilton	2145	83.46
Wichita	2000	93.02
Clark	1980	99.25
Stanton	1915	91.63
Hodgeman	1810	97.84
Comanche	1805	99.72
Wallace	1530	100.00
Lane	1490	99.00
Greeley	1215	96.81