Data / Rankings / Population under 18 / Counties in Missouri

Counties in Missouri by population under 18

Scotland County had the highest population under 18 of 115 counties in 2014, at 29%. Hickory County had the lowest, at 16.9%. The median was 23.1% and the figure for Missouri was 23%. Source: the U.S. Census Bureau.

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Highest29Scotland County
Lowest16.9Hickory County
Median23.1115 counties
Missouri23History

Map of counties, 2014

Adair County: 19.2 %Andrew County: 23.6 %Atchison County: 20.2 %Audrain County: 23.8 %Barry County: 23.1 %Barton County: 25.3 %Bates County: 24 %Benton County: 17.9 %Bollinger County: 22.6 %Boone County: 20.8 %Buchanan County: 22.8 %Butler County: 23.5 %Caldwell County: 23.9 %Callaway County: 21.8 %Camden County: 18.7 %Cape Girardeau County: 21.5 %Carroll County: 22.8 %Carter County: 23.1 %Cass County: 25.4 %Cedar County: 23.6 %Chariton County: 22.2 %Christian County: 26.6 %Clark County: 23.7 %Clay County: 25.2 %Clinton County: 23.8 %Cole County: 22.9 %Cooper County: 21.9 %Crawford County: 23.5 %Dade County: 21.3 %Dallas County: 23.3 %Daviess County: 26.4 %DeKalb County: 16.9 %Dent County: 22.8 %Douglas County: 21.5 %Dunklin County: 25.7 %Franklin County: 23.6 %Gasconade County: 21.6 %Gentry County: 24.7 %Greene County: 21.1 %Grundy County: 24.1 %Harrison County: 24.2 %Henry County: 22.5 %Hickory County: 16.9 %Holt County: 20.7 %Howard County: 21.8 %Howell County: 24.1 %Iron County: 21.9 %Jackson County: 23.8 %Jasper County: 25.6 %Jefferson County: 24.2 %Johnson County: 22.3 %Knox County: 24.4 %Laclede County: 24.4 %Lafayette County: 23.2 %Lawrence County: 25.5 %Lewis County: 22.5 %Lincoln County: 26.6 %Linn County: 23.8 %Livingston County: 20.9 %McDonald County: 26.5 %Macon County: 23.8 %Madison County: 23.4 %Maries County: 22.5 %Marion County: 23.5 %Mercer County: 24.4 %Miller County: 23.8 %Mississippi County: 22.1 %Moniteau County: 25.2 %Monroe County: 22.9 %Montgomery County: 22.8 %Morgan County: 22.1 %New Madrid County: 24 %Newton County: 24.6 %Nodaway County: 18.7 %Oregon County: 22.2 %Osage County: 23.8 %Ozark County: 20 %Pemiscot County: 26.8 %Perry County: 24.1 %Pettis County: 25.1 %Phelps County: 20.9 %Pike County: 21.9 %Platte County: 24.1 %Polk County: 24 %Pulaski County: 23 %Putnam County: 21.4 %Ralls County: 22.5 %Randolph County: 22 %Ray County: 23.6 %Reynolds County: 21.9 %Ripley County: 22.5 %St. Charles County: 24.6 %St. Clair County: 19.4 %Ste. Genevieve County: 22 %St. Francois County: 21.5 %St. Louis County: 22.4 %Saline County: 22.9 %Schuyler County: 25.7 %Scotland County: 29 %Scott County: 24 %Shannon County: 22.5 %Shelby County: 23.4 %Stoddard County: 22.5 %Stone County: 17.8 %Sullivan County: 23.7 %Taney County: 21 %Texas County: 21.6 %Vernon County: 24.5 %Warren County: 24.3 %Washington County: 23.1 %Wayne County: 20.3 %Webster County: 27.2 %Worth County: 21.3 %Wright County: 25.1 %St. Louis city: 20 %
  • Under 21
  • 21 to 22
  • 22 to 23
  • 23 to 24
  • 24 to 25
  • 25 and over
%, 2014. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2014

Scotland County: 29 %Scotland County29Webster County: 27.2 %Webster County27.2Pemiscot County: 26.8 %Pemiscot County26.8Christian County: 26.6 %Christian County26.6Lincoln County: 26.6 %Lincoln County26.6McDonald County: 26.5 %McDonald County26.5Daviess County: 26.4 %Daviess County26.4Schuyler County: 25.7 %Schuyler County25.7Dunklin County: 25.7 %Dunklin County25.7Jasper County: 25.6 %Jasper County25.6Lawrence County: 25.5 %Lawrence County25.5Cass County: 25.4 %Cass County25.4Barton County: 25.3 %Barton County25.3Clay County: 25.2 %Clay County25.2Moniteau County: 25.2 %Moniteau County25.2Pettis County: 25.1 %Pettis County25.1Wright County: 25.1 %Wright County25.1Gentry County: 24.7 %Gentry County24.7St. Charles County: 24.6 %St. Charles County24.6Newton County: 24.6 %Newton County24.6Vernon County: 24.5 %Vernon County24.5Laclede County: 24.4 %Laclede County24.4Mercer County: 24.4 %Mercer County24.4Knox County: 24.4 %Knox County24.4Warren County: 24.3 %Warren County24.3Jefferson County: 24.2 %Jefferson County24.2Harrison County: 24.2 %Harrison County24.2Perry County: 24.1 %Perry County24.1Grundy County: 24.1 %Grundy County24.1Platte County: 24.1 %Platte County24.1Howell County: 24.1 %Howell County24.1Bates County: 24 %Bates County24Polk County: 24 %Polk County24New Madrid County: 24 %New Madrid County24Scott County: 24 %Scott County24Caldwell County: 23.9 %Caldwell County23.9Jackson County: 23.8 %Jackson County23.8Audrain County: 23.8 %Audrain County23.8Clinton County: 23.8 %Clinton County23.8Miller County: 23.8 %Miller County23.8Scotland County: 29 %Scotland County29Webster County: 27.2 %Webster County27.2Pemiscot County: 26.8 %Pemiscot County26.8Christian County: 26.6 %Christian County26.6Lincoln County: 26.6 %Lincoln County26.6McDonald County: 26.5 %McDonald County26.5Daviess County: 26.4 %Daviess County26.4Schuyler County: 25.7 %Schuyler County25.7Dunklin County: 25.7 %Dunklin County25.7Jasper County: 25.6 %Jasper County25.6Lawrence County: 25.5 %Lawrence County25.5Cass County: 25.4 %Cass County25.4Barton County: 25.3 %Barton County25.3Clay County: 25.2 %Clay County25.2Moniteau County: 25.2 %Moniteau County25.2Pettis County: 25.1 %Pettis County25.1Wright County: 25.1 %Wright County25.1Gentry County: 24.7 %Gentry County24.7St. Charles County: 24.6 %St. Charles County24.6Newton County: 24.6 %Newton County24.6Vernon County: 24.5 %Vernon County24.5Laclede County: 24.4 %Laclede County24.4Mercer County: 24.4 %Mercer County24.4Knox County: 24.4 %Knox County24.4Warren County: 24.3 %Warren County24.3Jefferson County: 24.2 %Jefferson County24.2Harrison County: 24.2 %Harrison County24.2Perry County: 24.1 %Perry County24.1Grundy County: 24.1 %Grundy County24.1Platte County: 24.1 %Platte County24.1Howell County: 24.1 %Howell County24.1Bates County: 24 %Bates County24Polk County: 24 %Polk County24New Madrid County: 24 %New Madrid County24Scott County: 24 %Scott County24Caldwell County: 23.9 %Caldwell County23.9Jackson County: 23.8 %Jackson County23.8Audrain County: 23.8 %Audrain County23.8Clinton County: 23.8 %Clinton County23.8Miller County: 23.8 %Miller County23.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2014 (%)Change on 2013
1Scotland County290 pts
2Webster County27.2+0.1 pts
3Pemiscot County26.8-0.1 pts
4Christian County26.6-0.1 pts
5Lincoln County26.6-0.3 pts
6McDonald County26.5-0.2 pts
7Daviess County26.4+0.5 pts
8Schuyler County25.7+0.3 pts
9Dunklin County25.7-0.2 pts
10Jasper County25.6+0.1 pts
11Lawrence County25.5-0.1 pts
12Cass County25.4-0.3 pts
13Barton County25.3-0.4 pts
14Clay County25.2-0.2 pts
15Moniteau County25.2-0.1 pts
16Pettis County25.1-0.2 pts
17Wright County25.1-0.1 pts
18Gentry County24.7+0.2 pts
19St. Charles County24.6-0.3 pts
20Newton County24.6-0.1 pts
21Vernon County24.50 pts
22Laclede County24.4-0.1 pts
23Mercer County24.4-0.1 pts
24Knox County24.4+0.1 pts
25Warren County24.3+0.1 pts
26Jefferson County24.2-0.2 pts
27Harrison County24.2-0 pts
28Perry County24.1-0.2 pts
29Grundy County24.1-0.1 pts
30Platte County24.1-0.2 pts
31Howell County24.1-0.2 pts
32Bates County240 pts
33Polk County24-0.1 pts
34New Madrid County24+0.1 pts
35Scott County24-0.3 pts
36Caldwell County23.9-0.2 pts
37Jackson County23.8-0.1 pts
38Audrain County23.8+0.2 pts
39Clinton County23.8-0.4 pts
40Miller County23.8-0.1 pts
41Macon County23.8-0.1 pts
42Linn County23.8+0.2 pts
43Osage County23.8-0 pts
44Sullivan County23.7+0.1 pts
45Clark County23.7-0.3 pts
46Franklin County23.6-0.3 pts
47Ray County23.6-0.4 pts
48Cedar County23.60 pts
49Andrew County23.6+0.1 pts
50Crawford County23.5-0 pts
51Butler County23.5-0 pts
52Marion County23.5-0.1 pts
53Madison County23.4+0.1 pts
54Shelby County23.4-0.4 pts
55Dallas County23.3-0.1 pts
56Lafayette County23.2-0.2 pts
57Barry County23.1-0.3 pts
58Washington County23.1-0.2 pts
59Carter County23.1-0.2 pts
60Pulaski County23-0.3 pts
61Saline County22.9+0.2 pts
62Monroe County22.9+0.3 pts
63Cole County22.9-0.2 pts
64Montgomery County22.8-0.2 pts
65Buchanan County22.8-0.1 pts
66Carroll County22.8-0 pts
67Dent County22.8-0.2 pts
68Bollinger County22.6-0.2 pts
69Stoddard County22.5+0.1 pts
70Maries County22.5-0.4 pts
71Henry County22.50 pts
71Shannon County22.5-0.5 pts
73Ralls County22.5-0.2 pts
74Ripley County22.5-0.4 pts
75Lewis County22.5-0.3 pts
76St. Louis County22.4-0.2 pts
77Johnson County22.3-0.1 pts
78Chariton County22.2+0.4 pts
79Oregon County22.2+0.1 pts
80Mississippi County22.1-0.1 pts
81Morgan County22.1+0.1 pts
82Randolph County22-0.5 pts
83Ste. Genevieve County22-0.2 pts
84Iron County21.90 pts
85Pike County21.90 pts
86Cooper County21.9-0.1 pts
87Reynolds County21.9-0 pts
88Callaway County21.8-0.2 pts
89Howard County21.8-0.2 pts
90Gasconade County21.6+0.1 pts
91Texas County21.6-0 pts
92Cape Girardeau County21.5-0.2 pts
93St. Francois County21.5-0.1 pts
94Douglas County21.5+0.1 pts
95Putnam County21.4-0.8 pts
96Worth County21.3-0.2 pts
97Dade County21.3-0.2 pts
98Greene County21.1-0 pts
99Taney County21-0.3 pts
100Livingston County20.9-0.4 pts
101Phelps County20.9-0 pts
102Boone County20.8-0.1 pts
103Holt County20.7+0.2 pts
104Wayne County20.3-0.1 pts
105Atchison County20.2+0.1 pts
106Ozark County20+0.3 pts
107St. Louis city20-0.1 pts
108St. Clair County19.4-0.3 pts
109Adair County19.2+0.1 pts
110Camden County18.7-0.1 pts
111Nodaway County18.7+0.2 pts
112Benton County17.9+0.3 pts
113Stone County17.8-0 pts
114DeKalb County16.9+0.1 pts
115Hickory County16.9-0.2 pts

Other periods

About this ranking

Residents aged 0 to 17 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.

Uses the US age of majority. Not comparable with population_0_14_share, which stops at 14.

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 0 to 17 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 0 to 17 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 under 18, 2014) [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 0 to 17 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 under 18, 2014. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-under-18/missouri-counties?period=2014. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2014. 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-under-18/missouri-counties?period=2014.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2014 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/missouri-counties?period=2014 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_missouri_by_2014,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2014}},
  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-under-18/missouri-counties?period=2014. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 0 to 17 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 under 18, 2014
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-under-18/missouri-counties?period=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/missouri-counties?period=2014.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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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Rank Counties in Missouri by population under 18 using official data, and cite the source.
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Questions

Which county has the highest population under 18?

Scotland County, with 29% in 2014, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Hickory County, with 16.9% in 2014.

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 0 to 17 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 under 18: other rankings

Counties in Missouri: more rankings