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 2017, at 70.4%. LaGrange County had the lowest, at 53.1%. The median was 59.2% and the figure for Indiana was 60.8%. Source: the U.S. Census Bureau.

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Highest70.4Monroe County
Lowest53.1LaGrange County
Median59.292 counties
Indiana60.8History

Map of counties, 2017

Adams County: 53.4 %Allen County: 59.8 %Bartholomew County: 60.1 %Benton County: 57.1 %Blackford County: 57.4 %Boone County: 59.4 %Brown County: 57.9 %Carroll County: 57.9 %Cass County: 58.1 %Clark County: 61.5 %Clay County: 59.5 %Clinton County: 57.5 %Crawford County: 59.2 %Daviess County: 55.4 %Dearborn County: 60.1 %Decatur County: 58.8 %DeKalb County: 59.6 %Delaware County: 63.4 %Dubois County: 59.1 %Elkhart County: 58.1 %Fayette County: 58 %Floyd County: 61.2 %Fountain County: 57.8 %Franklin County: 58.8 %Fulton County: 57.1 %Gibson County: 58.9 %Grant County: 60.3 %Greene County: 58.6 %Hamilton County: 59.9 %Hancock County: 59.8 %Harrison County: 59.9 %Hendricks County: 60.2 %Henry County: 60.6 %Howard County: 58.6 %Huntington County: 60.3 %Jackson County: 59.1 %Jasper County: 58.7 %Jay County: 56.5 %Jefferson County: 61.3 %Jennings County: 60.5 %Johnson County: 60 %Knox County: 60.2 %Kosciusko County: 59.5 %LaGrange County: 53.1 %Lake County: 60.2 %LaPorte County: 61 %Lawrence County: 58.4 %Madison County: 59.7 %Marion County: 63.5 %Marshall County: 57.7 %Martin County: 58.1 %Miami County: 61.5 %Monroe County: 70.4 %Montgomery County: 59.5 %Morgan County: 60.2 %Newton County: 59 %Noble County: 59 %Ohio County: 59.5 %Orange County: 57.6 %Owen County: 59.3 %Parke County: 58.4 %Perry County: 60.7 %Pike County: 58.1 %Porter County: 61.2 %Posey County: 59.4 %Pulaski County: 58.4 %Putnam County: 63.4 %Randolph County: 56.6 %Ripley County: 58 %Rush County: 59.2 %St. Joseph County: 61.3 %Scott County: 60.4 %Shelby County: 60.3 %Spencer County: 58.7 %Starke County: 59 %Steuben County: 60.6 %Sullivan County: 61.8 %Switzerland County: 57.8 %Tippecanoe County: 67.4 %Tipton County: 58.2 %Union County: 59.1 %Vanderburgh County: 61.7 %Vermillion County: 58.1 %Vigo County: 63.3 %Wabash County: 56.9 %Warren County: 57.8 %Warrick County: 57.8 %Washington County: 60.2 %Wayne County: 58.7 %Wells County: 57.4 %White County: 56.7 %Whitley County: 59.6 %
  • Under 58
  • 58 to 59
  • 59 to 60
  • 60 to 61
  • 61 and over
%, 2017. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2017

Monroe County: 70.4 %Monroe County70.4Tippecanoe County: 67.4 %Tippecanoe County67.4Marion County: 63.5 %Marion County63.5Delaware County: 63.4 %Delaware County63.4Putnam County: 63.4 %Putnam County63.4Vigo County: 63.3 %Vigo County63.3Sullivan County: 61.8 %Sullivan County61.8Vanderburgh County: 61.7 %Vanderburgh County61.7Miami County: 61.5 %Miami County61.5Clark County: 61.5 %Clark County61.5Jefferson County: 61.3 %Jefferson County61.3St. Joseph County: 61.3 %St. Joseph County61.3Porter County: 61.2 %Porter County61.2Floyd County: 61.2 %Floyd County61.2LaPorte County: 61 %LaPorte County61Perry County: 60.7 %Perry County60.7Henry County: 60.6 %Henry County60.6Steuben County: 60.6 %Steuben County60.6Jennings County: 60.5 %Jennings County60.5Scott County: 60.4 %Scott County60.4Shelby County: 60.3 %Shelby County60.3Huntington County: 60.3 %Huntington County60.3Grant County: 60.3 %Grant County60.3Lake County: 60.2 %Lake County60.2Hendricks County: 60.2 %Hendricks County60.2Washington County: 60.2 %Washington County60.2Morgan County: 60.2 %Morgan County60.2Knox County: 60.2 %Knox County60.2Dearborn County: 60.1 %Dearborn County60.1Bartholomew County: 60.1 %Bartholomew County60.1Johnson County: 60 %Johnson County60Hamilton County: 59.9 %Hamilton County59.9Harrison County: 59.9 %Harrison County59.9Allen County: 59.8 %Allen County59.8Hancock County: 59.8 %Hancock County59.8Madison County: 59.7 %Madison County59.7Whitley County: 59.6 %Whitley County59.6DeKalb County: 59.6 %DeKalb County59.6Kosciusko County: 59.5 %Kosciusko County59.5Ohio County: 59.5 %Ohio County59.5Monroe County: 70.4 %Monroe County70.4Tippecanoe County: 67.4 %Tippecanoe County67.4Marion County: 63.5 %Marion County63.5Delaware County: 63.4 %Delaware County63.4Putnam County: 63.4 %Putnam County63.4Vigo County: 63.3 %Vigo County63.3Sullivan County: 61.8 %Sullivan County61.8Vanderburgh County: 61.7 %Vanderburgh County61.7Miami County: 61.5 %Miami County61.5Clark County: 61.5 %Clark County61.5Jefferson County: 61.3 %Jefferson County61.3St. Joseph County: 61.3 %St. Joseph County61.3Porter County: 61.2 %Porter County61.2Floyd County: 61.2 %Floyd County61.2LaPorte County: 61 %LaPorte County61Perry County: 60.7 %Perry County60.7Henry County: 60.6 %Henry County60.6Steuben County: 60.6 %Steuben County60.6Jennings County: 60.5 %Jennings County60.5Scott County: 60.4 %Scott County60.4Shelby County: 60.3 %Shelby County60.3Huntington County: 60.3 %Huntington County60.3Grant County: 60.3 %Grant County60.3Lake County: 60.2 %Lake County60.2Hendricks County: 60.2 %Hendricks County60.2Washington County: 60.2 %Washington County60.2Morgan County: 60.2 %Morgan County60.2Knox County: 60.2 %Knox County60.2Dearborn County: 60.1 %Dearborn County60.1Bartholomew County: 60.1 %Bartholomew County60.1Johnson County: 60 %Johnson County60Hamilton County: 59.9 %Hamilton County59.9Harrison County: 59.9 %Harrison County59.9Allen County: 59.8 %Allen County59.8Hancock County: 59.8 %Hancock County59.8Madison County: 59.7 %Madison County59.7Whitley County: 59.6 %Whitley County59.6DeKalb County: 59.6 %DeKalb County59.6Kosciusko County: 59.5 %Kosciusko County59.5Ohio County: 59.5 %Ohio County59.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2017 (%)Change on 2016
1Monroe County70.4-0.4 pts
2Tippecanoe County67.4-0.6 pts
3Marion County63.5-0.2 pts
4Delaware County63.4-0.3 pts
5Putnam County63.4-0.6 pts
6Vigo County63.3-0.4 pts
7Sullivan County61.8-0.2 pts
8Vanderburgh County61.7-0.4 pts
9Miami County61.5-0.3 pts
10Clark County61.5-0.2 pts
11Jefferson County61.3-0.3 pts
12St. Joseph County61.3-0.2 pts
13Porter County61.2-0.3 pts
14Floyd County61.2-0.2 pts
15LaPorte County61-0.5 pts
16Perry County60.7-0.5 pts
17Henry County60.6-0.1 pts
18Steuben County60.6-0.4 pts
19Jennings County60.5-0.1 pts
20Scott County60.4-0.3 pts
21Shelby County60.3-0.3 pts
22Huntington County60.3-0.2 pts
23Grant County60.3-0.4 pts
24Lake County60.2-0.2 pts
25Hendricks County60.2-0.2 pts
26Washington County60.2-0.3 pts
27Morgan County60.2-0.1 pts
28Knox County60.2-0.7 pts
29Dearborn County60.1-0.3 pts
30Bartholomew County60.1-0.3 pts
31Johnson County60-0.1 pts
32Hamilton County59.9-0.1 pts
33Harrison County59.9-0.3 pts
34Allen County59.8-0.3 pts
35Hancock County59.8-0.2 pts
36Madison County59.7-0.3 pts
37Whitley County59.6-0.3 pts
38DeKalb County59.6+0.1 pts
39Kosciusko County59.5-0.2 pts
40Ohio County59.5-0.5 pts
41Montgomery County59.5-0.2 pts
42Clay County59.5-0.3 pts
43Boone County59.4-0.1 pts
44Posey County59.4-0.5 pts
45Owen County59.3-0.3 pts
46Crawford County59.2-0.4 pts
47Rush County59.2-0.1 pts
48Jackson County59.1-0.4 pts
49Union County59.1-0.2 pts
50Dubois County59.1-0.4 pts
51Noble County59-0.1 pts
52Starke County59-0.3 pts
53Newton County59-0.6 pts
54Gibson County58.9-0.5 pts
55Decatur County58.8-0.2 pts
56Franklin County58.8-0.2 pts
57Spencer County58.7-0 pts
58Wayne County58.7-0.3 pts
59Jasper County58.7-0.3 pts
60Howard County58.6-0.3 pts
61Greene County58.6-0.4 pts
62Lawrence County58.4-0.3 pts
63Parke County58.4-0.7 pts
63Pulaski County58.4-0.5 pts
65Tipton County58.2-0.1 pts
66Pike County58.1-0.1 pts
67Vermillion County58.1-0.3 pts
68Martin County58.1-0.6 pts
69Cass County58.1-0.3 pts
70Elkhart County58.1-0.2 pts
71Ripley County58-0.3 pts
72Fayette County58-0.3 pts
73Brown County57.9-0.3 pts
74Carroll County57.9-0.2 pts
75Warren County57.8-0.3 pts
76Fountain County57.8-0.1 pts
77Switzerland County57.8-0.4 pts
78Warrick County57.8-0.5 pts
79Marshall County57.7-0.3 pts
80Orange County57.6-0.4 pts
81Clinton County57.5-0.2 pts
82Blackford County57.4-0.2 pts
83Wells County57.4-0.6 pts
84Benton County57.1-0.5 pts
85Fulton County57.1-0.2 pts
86Wabash County56.9-0.4 pts
87White County56.7-0.2 pts
88Randolph County56.6-0.1 pts
89Jay County56.5-0.2 pts
90Daviess County55.4-0.4 pts
91Adams County53.4-0.3 pts
92LaGrange County53.1-0.1 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 Indiana by population aged 18 to 64, 2017) [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, 2017. 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=2017. 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, 2017. 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=2017.

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, 2017 [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=2017 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_indiana_by_2017,
  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, 2017}},
  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=2017. 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, 2017
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=2017
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/indiana-counties?period=2017.
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 70.4% in 2017, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

LaGrange County, with 53.1% in 2017.

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