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

Counties in Missouri by population aged 18 to 64

Pulaski County had the highest population aged 18 to 64 of 115 counties in 2018, at 68.8%. Hickory County had the lowest, at 49.2%. The median was 57.4% and the figure for Missouri was 60.7%. Source: the U.S. Census Bureau.

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Highest68.8Pulaski County
Lowest49.2Hickory County
Median57.4115 counties
Missouri60.7History

Map of counties, 2018

Adair County: 65.6 %Andrew County: 57.5 %Atchison County: 54.5 %Audrain County: 57.9 %Barry County: 56.5 %Barton County: 56.3 %Bates County: 56.9 %Benton County: 52.2 %Bollinger County: 57.2 %Boone County: 66.9 %Buchanan County: 61.3 %Butler County: 58.3 %Caldwell County: 55.9 %Callaway County: 62.3 %Camden County: 54.5 %Cape Girardeau County: 61.4 %Carroll County: 54.8 %Carter County: 56.5 %Cass County: 58.7 %Cedar County: 51.9 %Chariton County: 54.7 %Christian County: 58.1 %Clark County: 54.9 %Clay County: 61.3 %Clinton County: 57.4 %Cole County: 61.5 %Cooper County: 60.7 %Crawford County: 57.4 %Dade County: 55.1 %Dallas County: 56.4 %Daviess County: 53.8 %DeKalb County: 67.1 %Dent County: 56.5 %Douglas County: 53.2 %Dunklin County: 56.6 %Franklin County: 59.5 %Gasconade County: 56.3 %Gentry County: 54.5 %Greene County: 62.7 %Grundy County: 53.3 %Harrison County: 54 %Henry County: 55.9 %Hickory County: 49.2 %Holt County: 54 %Howard County: 60 %Howell County: 55.9 %Iron County: 56.6 %Jackson County: 62.2 %Jasper County: 59.5 %Jefferson County: 61.3 %Johnson County: 64.4 %Knox County: 53.8 %Laclede County: 57.9 %Lafayette County: 58.3 %Lawrence County: 56.2 %Lewis County: 60 %Lincoln County: 60.9 %Linn County: 55 %Livingston County: 59.9 %McDonald County: 59.2 %Macon County: 54.3 %Madison County: 57.7 %Maries County: 57.3 %Marion County: 58.5 %Mercer County: 55.3 %Miller County: 57.7 %Mississippi County: 61 %Moniteau County: 58.8 %Monroe County: 54.8 %Montgomery County: 56.6 %Morgan County: 53.6 %New Madrid County: 57.1 %Newton County: 58.1 %Nodaway County: 64.7 %Oregon County: 53.5 %Osage County: 59.3 %Ozark County: 53.7 %Pemiscot County: 57.4 %Perry County: 57.9 %Pettis County: 58.5 %Phelps County: 63.1 %Pike County: 60.5 %Platte County: 61.6 %Polk County: 57.5 %Pulaski County: 68.8 %Putnam County: 53 %Ralls County: 56.5 %Randolph County: 61.2 %Ray County: 58.5 %Reynolds County: 55.3 %Ripley County: 55.6 %St. Charles County: 61.2 %St. Clair County: 53.6 %Ste. Genevieve County: 59.9 %St. Francois County: 62.4 %St. Louis County: 59.8 %Saline County: 60.4 %Schuyler County: 53.6 %Scotland County: 51.7 %Scott County: 57.9 %Shannon County: 55.6 %Shelby County: 54.2 %Stoddard County: 57.7 %Stone County: 53 %Sullivan County: 56.6 %Taney County: 58.4 %Texas County: 57.7 %Vernon County: 57 %Warren County: 59.6 %Washington County: 60.8 %Wayne County: 55.5 %Webster County: 57.3 %Worth County: 55.5 %Wright County: 55.2 %St. Louis city: 68.8 %
  • Under 55
  • 55 to 56
  • 56 to 57
  • 57 to 59
  • 59 to 61
  • 61 and over
%, 2018. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2018

Pulaski County: 68.8 %Pulaski County68.8St. Louis city: 68.8 %St. Louis city68.8DeKalb County: 67.1 %DeKalb County67.1Boone County: 66.9 %Boone County66.9Adair County: 65.6 %Adair County65.6Nodaway County: 64.7 %Nodaway County64.7Johnson County: 64.4 %Johnson County64.4Phelps County: 63.1 %Phelps County63.1Greene County: 62.7 %Greene County62.7St. Francois County: 62.4 %St. Francois County62.4Callaway County: 62.3 %Callaway County62.3Jackson County: 62.2 %Jackson County62.2Platte County: 61.6 %Platte County61.6Cole County: 61.5 %Cole County61.5Cape Girardeau County: 61.4 %Cape Girardeau County61.4Jefferson County: 61.3 %Jefferson County61.3Clay County: 61.3 %Clay County61.3Buchanan County: 61.3 %Buchanan County61.3St. Charles County: 61.2 %St. Charles County61.2Randolph County: 61.2 %Randolph County61.2Mississippi County: 61 %Mississippi County61Lincoln County: 60.9 %Lincoln County60.9Washington County: 60.8 %Washington County60.8Cooper County: 60.7 %Cooper County60.7Pike County: 60.5 %Pike County60.5Saline County: 60.4 %Saline County60.4Howard County: 60 %Howard County60Lewis County: 60 %Lewis County60Livingston County: 59.9 %Livingston County59.9Ste. Genevieve County: 59.9 %Ste. Genevieve County59.9St. Louis County: 59.8 %St. Louis County59.8Warren County: 59.6 %Warren County59.6Jasper County: 59.5 %Jasper County59.5Franklin County: 59.5 %Franklin County59.5Osage County: 59.3 %Osage County59.3McDonald County: 59.2 %McDonald County59.2Moniteau County: 58.8 %Moniteau County58.8Cass County: 58.7 %Cass County58.7Ray County: 58.5 %Ray County58.5Marion County: 58.5 %Marion County58.5Pulaski County: 68.8 %Pulaski County68.8St. Louis city: 68.8 %St. Louis city68.8DeKalb County: 67.1 %DeKalb County67.1Boone County: 66.9 %Boone County66.9Adair County: 65.6 %Adair County65.6Nodaway County: 64.7 %Nodaway County64.7Johnson County: 64.4 %Johnson County64.4Phelps County: 63.1 %Phelps County63.1Greene County: 62.7 %Greene County62.7St. Francois County: 62.4 %St. Francois County62.4Callaway County: 62.3 %Callaway County62.3Jackson County: 62.2 %Jackson County62.2Platte County: 61.6 %Platte County61.6Cole County: 61.5 %Cole County61.5Cape Girardeau County: 61.4 %Cape Girardeau County61.4Jefferson County: 61.3 %Jefferson County61.3Clay County: 61.3 %Clay County61.3Buchanan County: 61.3 %Buchanan County61.3St. Charles County: 61.2 %St. Charles County61.2Randolph County: 61.2 %Randolph County61.2Mississippi County: 61 %Mississippi County61Lincoln County: 60.9 %Lincoln County60.9Washington County: 60.8 %Washington County60.8Cooper County: 60.7 %Cooper County60.7Pike County: 60.5 %Pike County60.5Saline County: 60.4 %Saline County60.4Howard County: 60 %Howard County60Lewis County: 60 %Lewis County60Livingston County: 59.9 %Livingston County59.9Ste. Genevieve County: 59.9 %Ste. Genevieve County59.9St. Louis County: 59.8 %St. Louis County59.8Warren County: 59.6 %Warren County59.6Jasper County: 59.5 %Jasper County59.5Franklin County: 59.5 %Franklin County59.5Osage County: 59.3 %Osage County59.3McDonald County: 59.2 %McDonald County59.2Moniteau County: 58.8 %Moniteau County58.8Cass County: 58.7 %Cass County58.7Ray County: 58.5 %Ray County58.5Marion County: 58.5 %Marion County58.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Pulaski County68.8-0.1 pts
2St. Louis city68.8-0.1 pts
3DeKalb County67.1-0.2 pts
4Boone County66.9-0.6 pts
5Adair County65.6-0.2 pts
6Nodaway County64.7-0.5 pts
7Johnson County64.4-0.5 pts
8Phelps County63.1-0.3 pts
9Greene County62.7-0.2 pts
10St. Francois County62.4-0.2 pts
11Callaway County62.3-0.5 pts
12Jackson County62.2-0.1 pts
13Platte County61.6-0.4 pts
14Cole County61.5-0.3 pts
15Cape Girardeau County61.4-0.3 pts
16Jefferson County61.3-0.3 pts
17Clay County61.3-0.2 pts
18Buchanan County61.3-0.2 pts
19St. Charles County61.2-0.2 pts
20Randolph County61.2-0.6 pts
21Mississippi County61-0.3 pts
22Lincoln County60.9-0.1 pts
23Washington County60.8-0 pts
24Cooper County60.7-0.2 pts
25Pike County60.5-0.2 pts
26Saline County60.4-0 pts
27Howard County60-0.7 pts
28Lewis County60+0.2 pts
29Livingston County59.9-0.2 pts
30Ste. Genevieve County59.9-0.3 pts
31St. Louis County59.8-0.3 pts
32Warren County59.6+0.3 pts
33Jasper County59.5-0.2 pts
34Franklin County59.5-0.3 pts
35Osage County59.3-0.1 pts
36McDonald County59.2-0.1 pts
37Moniteau County58.8-0.2 pts
38Cass County58.7-0.1 pts
39Ray County58.5-0.3 pts
40Marion County58.5-0.5 pts
41Pettis County58.5-0.2 pts
42Taney County58.4-0.1 pts
43Lafayette County58.3-0.2 pts
44Butler County58.3-0.1 pts
45Christian County58.1-0.3 pts
46Newton County58.1-0.1 pts
47Scott County57.9-0.5 pts
48Audrain County57.9-0.7 pts
49Laclede County57.9-0 pts
50Perry County57.9-0.5 pts
51Stoddard County57.7-0.4 pts
52Miller County57.7-0.2 pts
53Madison County57.7-0.6 pts
54Texas County57.7-0.3 pts
55Andrew County57.5-0.5 pts
56Polk County57.50 pts
57Crawford County57.4-0.1 pts
58Clinton County57.4-0.3 pts
59Pemiscot County57.4-0.2 pts
60Maries County57.3-0.3 pts
61Webster County57.3-0.2 pts
62Bollinger County57.20 pts
63New Madrid County57.1-0.9 pts
64Vernon County57-0.2 pts
65Bates County56.9+0.1 pts
66Iron County56.6-0.9 pts
67Sullivan County56.6+0.1 pts
68Montgomery County56.6-0.3 pts
69Dunklin County56.6-0.2 pts
70Carter County56.5-0.4 pts
71Ralls County56.5-0.6 pts
72Barry County56.5-0.2 pts
73Dent County56.5-0.6 pts
74Dallas County56.4-0 pts
75Barton County56.3-0.1 pts
76Gasconade County56.3-0.2 pts
77Lawrence County56.2-0.2 pts
78Caldwell County55.9-0.2 pts
79Howell County55.9-0.4 pts
80Henry County55.90 pts
81Shannon County55.6-0.4 pts
82Ripley County55.6-0.7 pts
83Wayne County55.5-0.4 pts
84Worth County55.5-0.6 pts
85Reynolds County55.3-0.4 pts
86Mercer County55.3-0.7 pts
87Wright County55.2-0.4 pts
88Dade County55.1+0.2 pts
89Linn County55-0.2 pts
90Clark County54.9-0.4 pts
91Monroe County54.8-0.5 pts
92Carroll County54.8-0.6 pts
93Chariton County54.7-0.1 pts
94Camden County54.5-0.4 pts
95Atchison County54.5-0.3 pts
96Gentry County54.5-0.1 pts
97Macon County54.3-0.3 pts
98Shelby County54.2-0.4 pts
99Holt County54-0.7 pts
100Harrison County54+0.1 pts
101Daviess County53.8-0.3 pts
102Knox County53.8+0.3 pts
103Ozark County53.70 pts
104Morgan County53.6-0.1 pts
105Schuyler County53.6+0.3 pts
106St. Clair County53.6-0.2 pts
107Oregon County53.5-0.7 pts
108Grundy County53.3-0.4 pts
109Douglas County53.2-0.8 pts
110Putnam County53-0.4 pts
111Stone County53-0.3 pts
112Benton County52.2-0.6 pts
113Cedar County51.9-0.3 pts
114Scotland County51.7-0.7 pts
115Hickory County49.2+0.1 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, 2018) [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, 2018. 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=2018. 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, 2018. 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=2018.

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, 2018 [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=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_missouri_by_2018,
  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, 2018}},
  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=2018. 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, 2018
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=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/missouri-counties?period=2018.
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?

Pulaski County, with 68.8% in 2018, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Hickory County, with 49.2% in 2018.

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