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

Counties in Louisiana by population aged 18 to 64

West Feliciana Parish had the highest population aged 18 to 64 of 64 counties in 2018, at 68.6%. Tensas Parish had the lowest, at 54.2%. The median was 59.7% and the figure for Louisiana was 61%. Source: the U.S. Census Bureau.

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Highest68.6West Feliciana Parish
Lowest54.2Tensas Parish
Median59.764 counties
Louisiana61History

Map of counties, 2018

Acadia Parish: 58.2 %Allen Parish: 62.1 %Ascension Parish: 60.8 %Assumption Parish: 60.5 %Avoyelles Parish: 59.3 %Beauregard Parish: 59 %Bienville Parish: 56.9 %Bossier Parish: 60.4 %Caddo Parish: 59.1 %Calcasieu Parish: 60.4 %Caldwell Parish: 59.4 %Cameron Parish: 61 %Catahoula Parish: 59.1 %Claiborne Parish: 61.1 %Concordia Parish: 58.4 %De Soto Parish: 58.1 %East Baton Rouge Parish: 63.3 %East Carroll Parish: 63.6 %East Feliciana Parish: 63.4 %Evangeline Parish: 58.4 %Franklin Parish: 57.2 %Grant Parish: 63.6 %Iberia Parish: 59.7 %Iberville Parish: 62.4 %Jackson Parish: 57.6 %Jefferson Parish: 61.2 %Jefferson Davis Parish: 57.7 %Lafayette Parish: 62.5 %Lafourche Parish: 61.1 %LaSalle Parish: 60.9 %Lincoln Parish: 66 %Livingston Parish: 60.6 %Madison Parish: 58.7 %Morehouse Parish: 58.3 %Natchitoches Parish: 60.8 %Orleans Parish: 65.9 %Ouachita Parish: 59.9 %Plaquemines Parish: 60.9 %Pointe Coupee Parish: 57.6 %Rapides Parish: 59 %Red River Parish: 56.5 %Richland Parish: 59.4 %Sabine Parish: 55.7 %St. Bernard Parish: 61.4 %St. Charles Parish: 61.4 %St. Helena Parish: 58.6 %St. James Parish: 59.2 %St. John the Baptist Parish: 61.1 %St. Landry Parish: 57.3 %St. Martin Parish: 59.8 %St. Mary Parish: 59.6 %St. Tammany Parish: 58.9 %Tangipahoa Parish: 61.1 %Tensas Parish: 54.2 %Terrebonne Parish: 60.3 %Union Parish: 57.7 %Vermilion Parish: 58.7 %Vernon Parish: 61.5 %Washington Parish: 58 %Webster Parish: 57.3 %West Baton Rouge Parish: 61.8 %West Carroll Parish: 55.6 %West Feliciana Parish: 68.6 %Winn Parish: 61 %
  • Under 58
  • 58 to 59
  • 59 to 60
  • 60 to 61
  • 61 to 62
  • 62 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

West Feliciana Parish: 68.6 %West Feliciana Parish68.6Lincoln Parish: 66 %Lincoln Parish66Orleans Parish: 65.9 %Orleans Parish65.9Grant Parish: 63.6 %Grant Parish63.6East Carroll Parish: 63.6 %East Carroll Parish63.6East Feliciana Parish: 63.4 %East Feliciana Parish63.4East Baton Rouge Parish: 63.3 %East Baton Rouge Parish63.3Lafayette Parish: 62.5 %Lafayette Parish62.5Iberville Parish: 62.4 %Iberville Parish62.4Allen Parish: 62.1 %Allen Parish62.1West Baton Rouge Parish: 61.8 %West Baton Rouge Parish61.8Vernon Parish: 61.5 %Vernon Parish61.5St. Bernard Parish: 61.4 %St. Bernard Parish61.4St. Charles Parish: 61.4 %St. Charles Parish61.4Jefferson Parish: 61.2 %Jefferson Parish61.2Tangipahoa Parish: 61.1 %Tangipahoa Parish61.1Claiborne Parish: 61.1 %Claiborne Parish61.1Lafourche Parish: 61.1 %Lafourche Parish61.1St. John the Baptist Parish: 61.1 %St. John the Baptist Parish61.1Winn Parish: 61 %Winn Parish61Cameron Parish: 61 %Cameron Parish61Plaquemines Parish: 60.9 %Plaquemines Parish60.9LaSalle Parish: 60.9 %LaSalle Parish60.9Natchitoches Parish: 60.8 %Natchitoches Parish60.8Ascension Parish: 60.8 %Ascension Parish60.8Livingston Parish: 60.6 %Livingston Parish60.6Assumption Parish: 60.5 %Assumption Parish60.5Bossier Parish: 60.4 %Bossier Parish60.4Calcasieu Parish: 60.4 %Calcasieu Parish60.4Terrebonne Parish: 60.3 %Terrebonne Parish60.3Ouachita Parish: 59.9 %Ouachita Parish59.9St. Martin Parish: 59.8 %St. Martin Parish59.8Iberia Parish: 59.7 %Iberia Parish59.7St. Mary Parish: 59.6 %St. Mary Parish59.6Richland Parish: 59.4 %Richland Parish59.4Caldwell Parish: 59.4 %Caldwell Parish59.4Avoyelles Parish: 59.3 %Avoyelles Parish59.3St. James Parish: 59.2 %St. James Parish59.2Catahoula Parish: 59.1 %Catahoula Parish59.1Caddo Parish: 59.1 %Caddo Parish59.1West Feliciana Parish: 68.6 %West Feliciana Parish68.6Lincoln Parish: 66 %Lincoln Parish66Orleans Parish: 65.9 %Orleans Parish65.9Grant Parish: 63.6 %Grant Parish63.6East Carroll Parish: 63.6 %East Carroll Parish63.6East Feliciana Parish: 63.4 %East Feliciana Parish63.4East Baton Rouge Parish: 63.3 %East Baton Rouge Parish63.3Lafayette Parish: 62.5 %Lafayette Parish62.5Iberville Parish: 62.4 %Iberville Parish62.4Allen Parish: 62.1 %Allen Parish62.1West Baton Rouge Parish: 61.8 %West Baton Rouge Parish61.8Vernon Parish: 61.5 %Vernon Parish61.5St. Bernard Parish: 61.4 %St. Bernard Parish61.4St. Charles Parish: 61.4 %St. Charles Parish61.4Jefferson Parish: 61.2 %Jefferson Parish61.2Tangipahoa Parish: 61.1 %Tangipahoa Parish61.1Claiborne Parish: 61.1 %Claiborne Parish61.1Lafourche Parish: 61.1 %Lafourche Parish61.1St. John the Baptist Parish: 61.1 %St. John the Baptist Parish61.1Winn Parish: 61 %Winn Parish61Cameron Parish: 61 %Cameron Parish61Plaquemines Parish: 60.9 %Plaquemines Parish60.9LaSalle Parish: 60.9 %LaSalle Parish60.9Natchitoches Parish: 60.8 %Natchitoches Parish60.8Ascension Parish: 60.8 %Ascension Parish60.8Livingston Parish: 60.6 %Livingston Parish60.6Assumption Parish: 60.5 %Assumption Parish60.5Bossier Parish: 60.4 %Bossier Parish60.4Calcasieu Parish: 60.4 %Calcasieu Parish60.4Terrebonne Parish: 60.3 %Terrebonne Parish60.3Ouachita Parish: 59.9 %Ouachita Parish59.9St. Martin Parish: 59.8 %St. Martin Parish59.8Iberia Parish: 59.7 %Iberia Parish59.7St. Mary Parish: 59.6 %St. Mary Parish59.6Richland Parish: 59.4 %Richland Parish59.4Caldwell Parish: 59.4 %Caldwell Parish59.4Avoyelles Parish: 59.3 %Avoyelles Parish59.3St. James Parish: 59.2 %St. James Parish59.2Catahoula Parish: 59.1 %Catahoula Parish59.1Caddo Parish: 59.1 %Caddo Parish59.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1West Feliciana Parish68.6-0.6 pts
2Lincoln Parish66-0.1 pts
3Orleans Parish65.9-0.5 pts
4Grant Parish63.6-0.4 pts
5East Carroll Parish63.6+0.1 pts
6East Feliciana Parish63.4-0.5 pts
7East Baton Rouge Parish63.3-0.3 pts
8Lafayette Parish62.5-0.5 pts
9Iberville Parish62.4-0.3 pts
10Allen Parish62.1-0.2 pts
11West Baton Rouge Parish61.8-0.4 pts
12Vernon Parish61.5-0.6 pts
13St. Bernard Parish61.4-0.4 pts
14St. Charles Parish61.4-0.4 pts
15Jefferson Parish61.2-0.5 pts
16Tangipahoa Parish61.1-0.2 pts
17Claiborne Parish61.1-0.5 pts
18Lafourche Parish61.1-0.3 pts
19St. John the Baptist Parish61.1-0 pts
20Winn Parish61+0.1 pts
21Cameron Parish61-0.7 pts
22Plaquemines Parish60.9-0.3 pts
23LaSalle Parish60.9-0.3 pts
24Natchitoches Parish60.8-0.1 pts
25Ascension Parish60.8-0.2 pts
26Livingston Parish60.6-0.2 pts
27Assumption Parish60.5-0.3 pts
28Bossier Parish60.4-0.3 pts
29Calcasieu Parish60.4-0.2 pts
30Terrebonne Parish60.3-0.3 pts
31Ouachita Parish59.9-0.4 pts
32St. Martin Parish59.8-0.3 pts
33Iberia Parish59.7-0 pts
34St. Mary Parish59.6-0.3 pts
35Richland Parish59.40 pts
36Caldwell Parish59.40 pts
37Avoyelles Parish59.3-0.2 pts
38St. James Parish59.2-0.8 pts
39Catahoula Parish59.1-0.5 pts
40Caddo Parish59.1-0.3 pts
41Rapides Parish59-0.2 pts
42Beauregard Parish59-0.4 pts
43St. Tammany Parish58.9-0.4 pts
44Madison Parish58.7-0.7 pts
45Vermilion Parish58.7-0.1 pts
46St. Helena Parish58.6-0.7 pts
47Evangeline Parish58.4-0.2 pts
48Concordia Parish58.4-0.4 pts
49Morehouse Parish58.3-0.2 pts
50Acadia Parish58.2-0.2 pts
51De Soto Parish58.1-0.1 pts
52Washington Parish58-0.3 pts
53Jefferson Davis Parish57.7-0.2 pts
54Union Parish57.7-0.3 pts
55Pointe Coupee Parish57.6-0.3 pts
56Jackson Parish57.6-0.3 pts
57Webster Parish57.3-0.3 pts
58St. Landry Parish57.3-0 pts
59Franklin Parish57.2+0.1 pts
60Bienville Parish56.9-0.4 pts
61Red River Parish56.5-0.8 pts
62Sabine Parish55.7-0.4 pts
63West Carroll Parish55.6-0.3 pts
64Tensas Parish54.2+0.7 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 Louisiana 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 Louisiana 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/louisiana-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 Louisiana 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/louisiana-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 Louisiana 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/louisiana-counties?period=2018 (Accessed: 12 October 2026).

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

West Feliciana Parish, with 68.6% in 2018, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Tensas Parish, with 54.2% 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 Louisiana: more rankings