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

Counties in Indiana by population aged 18 to 64

Monroe County had the highest population aged 18 to 64 of 92 counties in 2016, at 70.9%. LaGrange County had the lowest, at 53.1%. The median was 59.6% and the figure for Indiana was 61.1%. Source: the U.S. Census Bureau.

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Highest70.9Monroe County
Lowest53.1LaGrange County
Median59.692 counties
Indiana61.1History

Map of counties, 2016

Adams County: 53.7 %Allen County: 60.1 %Bartholomew County: 60.4 %Benton County: 57.7 %Blackford County: 57.6 %Boone County: 59.6 %Brown County: 58.1 %Carroll County: 58.1 %Cass County: 58.3 %Clark County: 61.7 %Clay County: 59.8 %Clinton County: 57.7 %Crawford County: 59.7 %Daviess County: 55.8 %Dearborn County: 60.4 %Decatur County: 59 %DeKalb County: 59.5 %Delaware County: 63.7 %Dubois County: 59.5 %Elkhart County: 58.3 %Fayette County: 58.2 %Floyd County: 61.4 %Fountain County: 57.9 %Franklin County: 59 %Fulton County: 57.3 %Gibson County: 59.3 %Grant County: 60.6 %Greene County: 58.9 %Hamilton County: 60 %Hancock County: 60 %Harrison County: 60.1 %Hendricks County: 60.4 %Henry County: 60.7 %Howard County: 58.9 %Huntington County: 60.5 %Jackson County: 59.6 %Jasper County: 59 %Jay County: 56.7 %Jefferson County: 61.5 %Jennings County: 60.6 %Johnson County: 60.1 %Knox County: 60.9 %Kosciusko County: 59.8 %LaGrange County: 53.1 %Lake County: 60.4 %LaPorte County: 61.5 %Lawrence County: 58.8 %Madison County: 60 %Marion County: 63.7 %Marshall County: 57.9 %Martin County: 58.7 %Miami County: 61.8 %Monroe County: 70.9 %Montgomery County: 59.7 %Morgan County: 60.3 %Newton County: 59.6 %Noble County: 59.2 %Ohio County: 59.9 %Orange County: 58 %Owen County: 59.5 %Parke County: 59.1 %Perry County: 61.2 %Pike County: 58.3 %Porter County: 61.6 %Posey County: 59.9 %Pulaski County: 58.8 %Putnam County: 64 %Randolph County: 56.7 %Ripley County: 58.3 %Rush County: 59.3 %St. Joseph County: 61.4 %Scott County: 60.7 %Shelby County: 60.6 %Spencer County: 58.8 %Starke County: 59.3 %Steuben County: 61 %Sullivan County: 62.1 %Switzerland County: 58.2 %Tippecanoe County: 68 %Tipton County: 58.3 %Union County: 59.3 %Vanderburgh County: 62.1 %Vermillion County: 58.4 %Vigo County: 63.7 %Wabash County: 57.2 %Warren County: 58.1 %Warrick County: 58.3 %Washington County: 60.6 %Wayne County: 59 %Wells County: 58.1 %White County: 56.9 %Whitley County: 59.9 %
  • Under 58
  • 58 to 59
  • 59 to 60
  • 60 to 61
  • 61 and over
%, 2016. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2016

Monroe County: 70.9 %Monroe County70.9Tippecanoe County: 68 %Tippecanoe County68Putnam County: 64 %Putnam County64Delaware County: 63.7 %Delaware County63.7Marion County: 63.7 %Marion County63.7Vigo County: 63.7 %Vigo County63.7Vanderburgh County: 62.1 %Vanderburgh County62.1Sullivan County: 62.1 %Sullivan County62.1Miami County: 61.8 %Miami County61.8Clark County: 61.7 %Clark County61.7Porter County: 61.6 %Porter County61.6Jefferson County: 61.5 %Jefferson County61.5LaPorte County: 61.5 %LaPorte County61.5St. Joseph County: 61.4 %St. Joseph County61.4Floyd County: 61.4 %Floyd County61.4Perry County: 61.2 %Perry County61.2Steuben County: 61 %Steuben County61Knox County: 60.9 %Knox County60.9Scott County: 60.7 %Scott County60.7Henry County: 60.7 %Henry County60.7Jennings County: 60.6 %Jennings County60.6Grant County: 60.6 %Grant County60.6Shelby County: 60.6 %Shelby County60.6Washington County: 60.6 %Washington County60.6Huntington County: 60.5 %Huntington County60.5Hendricks County: 60.4 %Hendricks County60.4Lake County: 60.4 %Lake County60.4Dearborn County: 60.4 %Dearborn County60.4Bartholomew County: 60.4 %Bartholomew County60.4Morgan County: 60.3 %Morgan County60.3Harrison County: 60.1 %Harrison County60.1Allen County: 60.1 %Allen County60.1Johnson County: 60.1 %Johnson County60.1Madison County: 60 %Madison County60Hamilton County: 60 %Hamilton County60Hancock County: 60 %Hancock County60Ohio County: 59.9 %Ohio County59.9Posey County: 59.9 %Posey County59.9Whitley County: 59.9 %Whitley County59.9Kosciusko County: 59.8 %Kosciusko County59.8Monroe County: 70.9 %Monroe County70.9Tippecanoe County: 68 %Tippecanoe County68Putnam County: 64 %Putnam County64Delaware County: 63.7 %Delaware County63.7Marion County: 63.7 %Marion County63.7Vigo County: 63.7 %Vigo County63.7Vanderburgh County: 62.1 %Vanderburgh County62.1Sullivan County: 62.1 %Sullivan County62.1Miami County: 61.8 %Miami County61.8Clark County: 61.7 %Clark County61.7Porter County: 61.6 %Porter County61.6Jefferson County: 61.5 %Jefferson County61.5LaPorte County: 61.5 %LaPorte County61.5St. Joseph County: 61.4 %St. Joseph County61.4Floyd County: 61.4 %Floyd County61.4Perry County: 61.2 %Perry County61.2Steuben County: 61 %Steuben County61Knox County: 60.9 %Knox County60.9Scott County: 60.7 %Scott County60.7Henry County: 60.7 %Henry County60.7Jennings County: 60.6 %Jennings County60.6Grant County: 60.6 %Grant County60.6Shelby County: 60.6 %Shelby County60.6Washington County: 60.6 %Washington County60.6Huntington County: 60.5 %Huntington County60.5Hendricks County: 60.4 %Hendricks County60.4Lake County: 60.4 %Lake County60.4Dearborn County: 60.4 %Dearborn County60.4Bartholomew County: 60.4 %Bartholomew County60.4Morgan County: 60.3 %Morgan County60.3Harrison County: 60.1 %Harrison County60.1Allen County: 60.1 %Allen County60.1Johnson County: 60.1 %Johnson County60.1Madison County: 60 %Madison County60Hamilton County: 60 %Hamilton County60Hancock County: 60 %Hancock County60Ohio County: 59.9 %Ohio County59.9Posey County: 59.9 %Posey County59.9Whitley County: 59.9 %Whitley County59.9Kosciusko County: 59.8 %Kosciusko County59.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2016 (%)Change on 2015
1Monroe County70.9-0.5 pts
2Tippecanoe County68-0.3 pts
3Putnam County64-0.7 pts
4Delaware County63.7-0.1 pts
5Marion County63.7-0.1 pts
6Vigo County63.7-0.6 pts
7Vanderburgh County62.1-0.3 pts
8Sullivan County62.1-0.2 pts
9Miami County61.8-0.2 pts
10Clark County61.7-0.2 pts
11Porter County61.6-0.5 pts
12Jefferson County61.5-0.7 pts
13LaPorte County61.5-0.4 pts
14St. Joseph County61.4-0.2 pts
15Floyd County61.4-0.3 pts
16Perry County61.2-1 pts
17Steuben County61-0.5 pts
18Knox County60.9-0.5 pts
19Scott County60.7-0.4 pts
20Henry County60.7-0.2 pts
21Jennings County60.60 pts
22Grant County60.6-0.4 pts
23Shelby County60.6-0.5 pts
24Washington County60.6-0 pts
25Huntington County60.5-0.4 pts
26Hendricks County60.4-0.4 pts
27Lake County60.4-0.2 pts
28Dearborn County60.4-0.3 pts
29Bartholomew County60.4-0.4 pts
30Morgan County60.3-0.3 pts
31Harrison County60.1-0.6 pts
32Allen County60.1-0.2 pts
33Johnson County60.1-0.2 pts
34Madison County60-0.3 pts
35Hamilton County60-0.2 pts
36Hancock County60-0.1 pts
37Ohio County59.9-0.3 pts
38Posey County59.9-0.4 pts
39Whitley County59.9-0.4 pts
40Kosciusko County59.8-0.2 pts
41Clay County59.8-0.5 pts
42Crawford County59.7-0 pts
43Montgomery County59.7-0.1 pts
44Boone County59.6-0.2 pts
45Jackson County59.6-0.3 pts
46Newton County59.6-0.3 pts
47Owen County59.5-0.1 pts
48Dubois County59.5-0.3 pts
49DeKalb County59.5-0.5 pts
50Gibson County59.3-0.3 pts
51Union County59.3+0.1 pts
52Starke County59.3-0.6 pts
53Rush County59.3-0.1 pts
54Noble County59.2-0.2 pts
55Parke County59.1-0.5 pts
56Wayne County59-0.2 pts
57Franklin County59-0.5 pts
58Decatur County59-0.3 pts
59Jasper County59-0.1 pts
60Greene County58.9-0.1 pts
61Howard County58.9-0.4 pts
62Pulaski County58.80 pts
63Lawrence County58.8-0.4 pts
64Spencer County58.8-0.4 pts
65Martin County58.7-0.2 pts
66Vermillion County58.4-0.4 pts
67Cass County58.3-0.3 pts
68Ripley County58.3-0.2 pts
69Tipton County58.3-0.1 pts
70Pike County58.3-0.6 pts
71Warrick County58.3-0.4 pts
72Elkhart County58.3-0.2 pts
73Fayette County58.2-0.2 pts
74Switzerland County58.2+0.1 pts
75Brown County58.1-0.4 pts
76Warren County58.1-0.3 pts
77Carroll County58.1-0.4 pts
78Wells County58.1-0.2 pts
79Orange County58-0.2 pts
80Marshall County57.9-0.1 pts
81Fountain County57.9+0.1 pts
82Clinton County57.7-0.2 pts
83Benton County57.7-0.2 pts
84Blackford County57.6-0.4 pts
85Fulton County57.3-0.5 pts
86Wabash County57.2-0.4 pts
87White County56.9-0.4 pts
88Jay County56.7-0.3 pts
89Randolph County56.7-0.5 pts
90Daviess County55.8-0.4 pts
91Adams County53.7-0.3 pts
92LaGrange County53.1-0.2 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 Indiana by population aged 18 to 64, 2016) [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 Indiana by population aged 18 to 64, 2016. 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/indiana-counties?period=2016. 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 Indiana by population aged 18 to 64, 2016. 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/indiana-counties?period=2016.

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 Indiana by population aged 18 to 64, 2016 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/indiana-counties?period=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_indiana_by_2016,
  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 Indiana by population aged 18 to 64, 2016}},
  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/indiana-counties?period=2016. 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 Indiana by population aged 18 to 64, 2016
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/indiana-counties?period=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/indiana-counties?period=2016.
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?

Monroe County, with 70.9% in 2016, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

LaGrange County, with 53.1% in 2016.

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 Indiana: more rankings