Missouri Citizen Population By County in 2018 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the citizen population for Missouri was 5,958,475 and represented 97.84% of the total Missouri population.

Among all Missouri counties, St. Louis had the highest citizen population (964.38K), followed by Jackson (668.60K), and St. Charles (381.84K).

In terms of percentages, Carter had the highest percentage of its population being citizens (100.00%), followed by Putnam (100.00%), and Scotland (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:
Missouri Citizen Voting-age Population By County in 2018

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

See this for other years:

Missouri Citizen Population By County in 2018

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County	Citizen Population	% of County Population
St. Louis	964375	96.56
Jackson	668600	96.62
St. Charles	381840	97.91
St. Louis city	299595	96.25
Greene	283825	98.40
Clay	234800	98.18
Jefferson	221740	99.30
Boone	169000	95.74
Jasper	115900	97.20
Franklin	102280	99.51
Cass	101625	98.97
Platte	96075	97.22
Buchanan	86725	97.36
Christian	83425	98.99
Cape Girardeau	76615	97.82
Cole	75635	98.56
St. Francois	65905	99.34
Newton	57090	98.09
Lincoln	55290	99.51
Taney	53580	97.92
Johnson	52815	98.37
Pulaski	51400	97.74
Camden	44475	98.63
Callaway	44420	99.06
Phelps	42985	95.97
Butler	42465	99.37
Pettis	40565	95.74
Howell	39830	99.33
Scott	38430	99.23
Webster	37955	99.67
Lawrence	37195	97.54
Laclede	35345	99.55
Barry	34235	96.45
Warren	33740	99.50
Lafayette	32415	99.46
Polk	31495	99.83
Stone	31335	99.40
Dunklin	29635	97.39
Stoddard	29430	99.73
Marion	28545	99.56
Texas	25630	99.84
Audrain	25445	98.87
Miller	24995	99.78
Washington	24885	99.82
Randolph	24850	99.62
Adair	24480	96.66
Crawford	24155	99.49
Ray	22765	99.74
Saline	22165	95.95
Nodaway	22145	98.23
Henry	21585	99.17
McDonald	21330	93.45
Vernon	20575	99.44
Clinton	20370	99.49
Morgan	20115	99.90
Perry	19010	99.30
Benton	18935	99.71
Pike	18325	99.11
Wright	18240	99.70
Ste. Genevieve	17800	99.61
New Madrid	17740	99.61
Cooper	17545	99.57
Andrew	17350	99.68
Pemiscot	16970	99.65
Dallas	16370	99.21
Bates	16340	99.79
Moniteau	15870	99.44
Dent	15420	99.45
Macon	15145	99.28
Livingston	14995	99.47
Gasconade	14730	99.90
Cedar	13860	99.43
Mississippi	13710	99.71
Ripley	13670	99.82
Osage	13615	99.96
Douglas	13345	99.78
Wayne	13270	99.70
DeKalb	12525	99.68
Bollinger	12265	99.88
Madison	12155	99.59
Linn	12145	99.67
Barton	11785	99.45
Montgomery	11505	99.65
Oregon	10670	99.72
Iron	10205	99.85
Ralls	10180	99.66
Howard	10075	99.61
Lewis	9955	99.30
Grundy	9850	98.11
Hickory	9365	99.95
St. Clair	9345	99.57
Ozark	9225	99.89
Caldwell	8965	99.06
Maries	8860	99.72
Carroll	8790	99.38
Monroe	8625	99.65
Harrison	8495	99.30
Daviess	8260	99.52
Shannon	8245	100.00
Dade	7560	99.61
Chariton	7540	99.93
Clark	6770	99.56
Gentry	6615	99.25
Reynolds	6280	99.45
Carter	6195	100.00
Sullivan	6095	96.52
Shelby	6055	99.92
Atchison	5250	99.62
Scotland	4900	100.00
Putnam	4815	100.00
Schuyler	4495	99.89
Holt	4445	99.78
Knox	3925	99.37
Mercer	3630	99.05
Worth	2035	99.76