Data / Rankings / Population aged 18 to 64 / Counties in Missouri

Counties in Missouri by population aged 18 to 64

St. Louis city had the highest population aged 18 to 64 of 115 counties in 2019, at 68.7%. Hickory County had the lowest, at 49%. The median was 57.1% and the figure for Missouri was 60.4%. Source: the U.S. Census Bureau.

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Highest68.7St. Louis city
Lowest49Hickory County
Median57.1115 counties
Missouri60.4History

Map of counties, 2019

Adair County: 65.2 %Andrew County: 57 %Atchison County: 53.8 %Audrain County: 57.1 %Barry County: 56.1 %Barton County: 55.9 %Bates County: 56.9 %Benton County: 51.9 %Bollinger County: 56.6 %Boone County: 66.3 %Buchanan County: 60.9 %Butler County: 58 %Caldwell County: 55.9 %Callaway County: 61.9 %Camden County: 54.4 %Cape Girardeau County: 61.1 %Carroll County: 54.9 %Carter County: 55.8 %Cass County: 58.5 %Cedar County: 51.6 %Chariton County: 54 %Christian County: 57.8 %Clark County: 54.3 %Clay County: 61 %Clinton County: 57.2 %Cole County: 61 %Cooper County: 59.9 %Crawford County: 57.3 %Dade County: 54.6 %Dallas County: 55.7 %Daviess County: 53.6 %DeKalb County: 62 %Dent County: 56.5 %Douglas County: 52.4 %Dunklin County: 56.5 %Franklin County: 59.2 %Gasconade County: 56 %Gentry County: 53.6 %Greene County: 62.5 %Grundy County: 52.9 %Harrison County: 53.6 %Henry County: 55.5 %Hickory County: 49 %Holt County: 53.2 %Howard County: 59.4 %Howell County: 55.7 %Iron County: 56.4 %Jackson County: 62 %Jasper County: 59.4 %Jefferson County: 61 %Johnson County: 63.8 %Knox County: 53.1 %Laclede County: 57.8 %Lafayette County: 57.9 %Lawrence County: 56.1 %Lewis County: 60 %Lincoln County: 60.6 %Linn County: 54.8 %Livingston County: 59.2 %McDonald County: 59.2 %Macon County: 54.3 %Madison County: 57.5 %Maries County: 56.8 %Marion County: 58.3 %Mercer County: 55.2 %Miller County: 57.2 %Mississippi County: 60.6 %Moniteau County: 57.9 %Monroe County: 54.2 %Montgomery County: 56.7 %Morgan County: 53.3 %New Madrid County: 56.7 %Newton County: 57.8 %Nodaway County: 64 %Oregon County: 53.4 %Osage County: 58.9 %Ozark County: 53 %Pemiscot County: 57 %Perry County: 57.5 %Pettis County: 58.1 %Phelps County: 62.7 %Pike County: 58.7 %Platte County: 61.4 %Polk County: 57.3 %Pulaski County: 68.5 %Putnam County: 52.4 %Ralls County: 56.3 %Randolph County: 61.3 %Ray County: 58.2 %Reynolds County: 54.4 %Ripley County: 55.2 %St. Charles County: 60.9 %St. Clair County: 53.3 %Ste. Genevieve County: 59.1 %St. Francois County: 62.2 %St. Louis County: 59.4 %Saline County: 60.2 %Schuyler County: 53.4 %Scotland County: 51.5 %Scott County: 57.5 %Shannon County: 55.1 %Shelby County: 53.4 %Stoddard County: 57.3 %Stone County: 52.4 %Sullivan County: 56 %Taney County: 58.2 %Texas County: 57.2 %Vernon County: 56.5 %Warren County: 59.4 %Washington County: 60.4 %Wayne County: 54.9 %Webster County: 57.4 %Worth County: 55.6 %Wright County: 55.1 %St. Louis city: 68.7 %
  • Under 54
  • 54 to 56
  • 56 to 57
  • 57 to 58
  • 58 to 61
  • 61 and over
%, 2019. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2019

St. Louis city: 68.7 %St. Louis city68.7Pulaski County: 68.5 %Pulaski County68.5Boone County: 66.3 %Boone County66.3Adair County: 65.2 %Adair County65.2Nodaway County: 64 %Nodaway County64Johnson County: 63.8 %Johnson County63.8Phelps County: 62.7 %Phelps County62.7Greene County: 62.5 %Greene County62.5St. Francois County: 62.2 %St. Francois County62.2Jackson County: 62 %Jackson County62DeKalb County: 62 %DeKalb County62Callaway County: 61.9 %Callaway County61.9Platte County: 61.4 %Platte County61.4Randolph County: 61.3 %Randolph County61.3Cape Girardeau County: 61.1 %Cape Girardeau County61.1Clay County: 61 %Clay County61Cole County: 61 %Cole County61Jefferson County: 61 %Jefferson County61St. Charles County: 60.9 %St. Charles County60.9Buchanan County: 60.9 %Buchanan County60.9Mississippi County: 60.6 %Mississippi County60.6Lincoln County: 60.6 %Lincoln County60.6Washington County: 60.4 %Washington County60.4Saline County: 60.2 %Saline County60.2Lewis County: 60 %Lewis County60Cooper County: 59.9 %Cooper County59.9St. Louis County: 59.4 %St. Louis County59.4Jasper County: 59.4 %Jasper County59.4Howard County: 59.4 %Howard County59.4Warren County: 59.4 %Warren County59.4McDonald County: 59.2 %McDonald County59.2Franklin County: 59.2 %Franklin County59.2Livingston County: 59.2 %Livingston County59.2Ste. Genevieve County: 59.1 %Ste. Genevieve County59.1Osage County: 58.9 %Osage County58.9Pike County: 58.7 %Pike County58.7Cass County: 58.5 %Cass County58.5Marion County: 58.3 %Marion County58.3Ray County: 58.2 %Ray County58.2Taney County: 58.2 %Taney County58.2St. Louis city: 68.7 %St. Louis city68.7Pulaski County: 68.5 %Pulaski County68.5Boone County: 66.3 %Boone County66.3Adair County: 65.2 %Adair County65.2Nodaway County: 64 %Nodaway County64Johnson County: 63.8 %Johnson County63.8Phelps County: 62.7 %Phelps County62.7Greene County: 62.5 %Greene County62.5St. Francois County: 62.2 %St. Francois County62.2Jackson County: 62 %Jackson County62DeKalb County: 62 %DeKalb County62Callaway County: 61.9 %Callaway County61.9Platte County: 61.4 %Platte County61.4Randolph County: 61.3 %Randolph County61.3Cape Girardeau County: 61.1 %Cape Girardeau County61.1Clay County: 61 %Clay County61Cole County: 61 %Cole County61Jefferson County: 61 %Jefferson County61St. Charles County: 60.9 %St. Charles County60.9Buchanan County: 60.9 %Buchanan County60.9Mississippi County: 60.6 %Mississippi County60.6Lincoln County: 60.6 %Lincoln County60.6Washington County: 60.4 %Washington County60.4Saline County: 60.2 %Saline County60.2Lewis County: 60 %Lewis County60Cooper County: 59.9 %Cooper County59.9St. Louis County: 59.4 %St. Louis County59.4Jasper County: 59.4 %Jasper County59.4Howard County: 59.4 %Howard County59.4Warren County: 59.4 %Warren County59.4McDonald County: 59.2 %McDonald County59.2Franklin County: 59.2 %Franklin County59.2Livingston County: 59.2 %Livingston County59.2Ste. Genevieve County: 59.1 %Ste. Genevieve County59.1Osage County: 58.9 %Osage County58.9Pike County: 58.7 %Pike County58.7Cass County: 58.5 %Cass County58.5Marion County: 58.3 %Marion County58.3Ray County: 58.2 %Ray County58.2Taney County: 58.2 %Taney County58.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2019 (%)Change on 2018
1St. Louis city68.7-0.1 pts
2Pulaski County68.5-0.3 pts
3Boone County66.3-0.7 pts
4Adair County65.2-0.4 pts
5Nodaway County64-0.7 pts
6Johnson County63.8-0.5 pts
7Phelps County62.7-0.4 pts
8Greene County62.5-0.2 pts
9St. Francois County62.2-0.2 pts
10Jackson County62-0.2 pts
11DeKalb County62-5.1 pts
12Callaway County61.9-0.4 pts
13Platte County61.4-0.2 pts
14Randolph County61.3+0.2 pts
15Cape Girardeau County61.1-0.3 pts
16Clay County61-0.3 pts
17Cole County61-0.5 pts
18Jefferson County61-0.3 pts
19St. Charles County60.9-0.3 pts
20Buchanan County60.9-0.4 pts
21Mississippi County60.6-0.3 pts
22Lincoln County60.6-0.3 pts
23Washington County60.4-0.4 pts
24Saline County60.2-0.2 pts
25Lewis County600 pts
26Cooper County59.9-0.8 pts
27St. Louis County59.4-0.4 pts
28Jasper County59.4-0.1 pts
29Howard County59.4-0.6 pts
30Warren County59.4-0.2 pts
31McDonald County59.2-0 pts
32Franklin County59.2-0.3 pts
33Livingston County59.2-0.8 pts
34Ste. Genevieve County59.1-0.8 pts
35Osage County58.9-0.4 pts
36Pike County58.7-1.8 pts
37Cass County58.5-0.2 pts
38Marion County58.3-0.2 pts
39Ray County58.2-0.3 pts
40Taney County58.2-0.2 pts
41Pettis County58.1-0.4 pts
42Butler County58-0.3 pts
43Moniteau County57.9-0.9 pts
44Lafayette County57.9-0.4 pts
45Christian County57.8-0.3 pts
46Newton County57.8-0.3 pts
47Laclede County57.8-0.1 pts
48Madison County57.5-0.1 pts
49Scott County57.5-0.4 pts
50Perry County57.5-0.4 pts
51Webster County57.40 pts
52Stoddard County57.3-0.4 pts
53Polk County57.3-0.2 pts
54Crawford County57.3-0.2 pts
55Miller County57.2-0.5 pts
56Clinton County57.2-0.2 pts
57Texas County57.2-0.5 pts
58Audrain County57.1-0.8 pts
59Pemiscot County57-0.4 pts
60Andrew County57-0.6 pts
61Bates County56.90 pts
62Maries County56.8-0.6 pts
63Montgomery County56.7+0.1 pts
64New Madrid County56.7-0.4 pts
65Bollinger County56.6-0.6 pts
66Dent County56.5+0.1 pts
67Vernon County56.5-0.5 pts
68Dunklin County56.5-0.1 pts
69Iron County56.4-0.2 pts
70Ralls County56.3-0.2 pts
71Barry County56.1-0.4 pts
72Lawrence County56.1-0.2 pts
73Sullivan County56-0.6 pts
74Gasconade County56-0.3 pts
75Barton County55.9-0.4 pts
76Caldwell County55.9-0.1 pts
77Carter County55.8-0.7 pts
78Dallas County55.7-0.7 pts
79Howell County55.7-0.2 pts
80Worth County55.6+0.1 pts
81Henry County55.5-0.3 pts
82Mercer County55.2-0.1 pts
83Ripley County55.2-0.4 pts
84Shannon County55.1-0.5 pts
85Wright County55.1-0.2 pts
86Wayne County54.9-0.6 pts
87Carroll County54.9+0.1 pts
88Linn County54.8-0.2 pts
89Dade County54.6-0.6 pts
90Camden County54.4-0.1 pts
91Reynolds County54.4-1 pts
92Clark County54.3-0.6 pts
93Macon County54.3-0 pts
94Monroe County54.2-0.6 pts
95Chariton County54-0.8 pts
96Atchison County53.8-0.7 pts
97Harrison County53.6-0.3 pts
98Gentry County53.6-0.9 pts
99Daviess County53.6-0.2 pts
100Shelby County53.4-0.7 pts
101Schuyler County53.4-0.2 pts
102Oregon County53.4-0.2 pts
103Morgan County53.3-0.4 pts
104St. Clair County53.3-0.3 pts
105Holt County53.2-0.8 pts
106Knox County53.1-0.6 pts
107Ozark County53-0.7 pts
108Grundy County52.9-0.4 pts
109Stone County52.4-0.5 pts
110Putnam County52.4-0.5 pts
111Douglas County52.4-0.8 pts
112Benton County51.9-0.3 pts
113Cedar County51.6-0.3 pts
114Scotland County51.5-0.2 pts
115Hickory County49-0.3 pts

Other periods

About this ranking

Residents aged 18 to 64 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in Missouri by population aged 18 to 64, 2019) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Missouri by population aged 18 to 64, 2019. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/missouri-counties?period=2019. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in Missouri by population aged 18 to 64, 2019. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-18-64/missouri-counties?period=2019.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Missouri by population aged 18 to 64, 2019 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/missouri-counties?period=2019 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_missouri_by_2019,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Missouri by population aged 18 to 64, 2019}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-18-64/missouri-counties?period=2019. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Missouri by population aged 18 to 64, 2019
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-18-64/missouri-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/missouri-counties?period=2019.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest population aged 18 to 64?

St. Louis city, with 68.7% in 2019, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Hickory County, with 49% in 2019.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population aged 18 to 64: other rankings

Counties in Missouri: more rankings