Data / Rankings / Median age on 1 July (US county estimates) / Counties in Louisiana

Counties in Louisiana by median age on 1 July (US county estimates)

Tensas Parish had the highest median age on 1 July (US county estimates) of 64 counties in 2018, at 45.4 years. Lincoln Parish had the lowest, at 29.3 years. The median was 38.9 years. Source: the U.S. Census Bureau.

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Highest45.4Tensas Parish
Lowest29.3Lincoln Parish
Median38.964 counties

Map of counties, 2018

Acadia Parish: 38.3 yearsAllen Parish: 39.3 yearsAscension Parish: 35.8 yearsAssumption Parish: 42 yearsAvoyelles Parish: 40 yearsBeauregard Parish: 38.7 yearsBienville Parish: 43.3 yearsBossier Parish: 35.7 yearsCaddo Parish: 38.5 yearsCalcasieu Parish: 36.6 yearsCaldwell Parish: 41 yearsCameron Parish: 41.4 yearsCatahoula Parish: 40.2 yearsClaiborne Parish: 44.1 yearsConcordia Parish: 39 yearsDe Soto Parish: 40.8 yearsEast Baton Rouge Parish: 34.7 yearsEast Carroll Parish: 35.4 yearsEast Feliciana Parish: 44.7 yearsEvangeline Parish: 38.6 yearsFranklin Parish: 39.6 yearsGrant Parish: 38.7 yearsIberia Parish: 38.3 yearsIberville Parish: 40.7 yearsJackson Parish: 41.6 yearsJefferson Parish: 39.4 yearsJefferson Davis Parish: 38.4 yearsLafayette Parish: 35.8 yearsLafourche Parish: 37.8 yearsLaSalle Parish: 37.8 yearsLincoln Parish: 29.3 yearsLivingston Parish: 36.3 yearsMadison Parish: 36.9 yearsMorehouse Parish: 41.2 yearsNatchitoches Parish: 36.2 yearsOrleans Parish: 35.7 yearsOuachita Parish: 35.9 yearsPlaquemines Parish: 36.4 yearsPointe Coupee Parish: 43.6 yearsRapides Parish: 38.7 yearsRed River Parish: 40.6 yearsRichland Parish: 40.2 yearsSabine Parish: 42.6 yearsSt. Bernard Parish: 34.1 yearsSt. Charles Parish: 38.6 yearsSt. Helena Parish: 41.3 yearsSt. James Parish: 40 yearsSt. John the Baptist Parish: 38.8 yearsSt. Landry Parish: 38.7 yearsSt. Martin Parish: 39.3 yearsSt. Mary Parish: 39.7 yearsSt. Tammany Parish: 40.7 yearsTangipahoa Parish: 36.1 yearsTensas Parish: 45.4 yearsTerrebonne Parish: 37.3 yearsUnion Parish: 44.3 yearsVermilion Parish: 38.4 yearsVernon Parish: 32.4 yearsWashington Parish: 40.7 yearsWebster Parish: 42.7 yearsWest Baton Rouge Parish: 36.7 yearsWest Carroll Parish: 43.1 yearsWest Feliciana Parish: 44.3 yearsWinn Parish: 40 years
  • Under 36
  • 36 to 38
  • 38 to 39
  • 39 to 40
  • 40 to 42
  • 42 and over
years, 2018. Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2018

Tensas Parish: 45.4 yearsTensas Parish45.4East Feliciana Parish: 44.7 yearsEast Feliciana Parish44.7Union Parish: 44.3 yearsUnion Parish44.3West Feliciana Parish: 44.3 yearsWest Feliciana Parish44.3Claiborne Parish: 44.1 yearsClaiborne Parish44.1Pointe Coupee Parish: 43.6 yearsPointe Coupee Parish43.6Bienville Parish: 43.3 yearsBienville Parish43.3West Carroll Parish: 43.1 yearsWest Carroll Parish43.1Webster Parish: 42.7 yearsWebster Parish42.7Sabine Parish: 42.6 yearsSabine Parish42.6Assumption Parish: 42 yearsAssumption Parish42Jackson Parish: 41.6 yearsJackson Parish41.6Cameron Parish: 41.4 yearsCameron Parish41.4St. Helena Parish: 41.3 yearsSt. Helena Parish41.3Morehouse Parish: 41.2 yearsMorehouse Parish41.2Caldwell Parish: 41 yearsCaldwell Parish41De Soto Parish: 40.8 yearsDe Soto Parish40.8Iberville Parish: 40.7 yearsIberville Parish40.7St. Tammany Parish: 40.7 yearsSt. Tammany Parish40.7Washington Parish: 40.7 yearsWashington Parish40.7Red River Parish: 40.6 yearsRed River Parish40.6Catahoula Parish: 40.2 yearsCatahoula Parish40.2Richland Parish: 40.2 yearsRichland Parish40.2Avoyelles Parish: 40 yearsAvoyelles Parish40St. James Parish: 40 yearsSt. James Parish40Winn Parish: 40 yearsWinn Parish40St. Mary Parish: 39.7 yearsSt. Mary Parish39.7Franklin Parish: 39.6 yearsFranklin Parish39.6Jefferson Parish: 39.4 yearsJefferson Parish39.4Allen Parish: 39.3 yearsAllen Parish39.3St. Martin Parish: 39.3 yearsSt. Martin Parish39.3Concordia Parish: 39 yearsConcordia Parish39St. John the Baptist Parish: 38.8 yearsSt. John the Baptist Parish38.8Beauregard Parish: 38.7 yearsBeauregard Parish38.7Grant Parish: 38.7 yearsGrant Parish38.7Rapides Parish: 38.7 yearsRapides Parish38.7St. Landry Parish: 38.7 yearsSt. Landry Parish38.7Evangeline Parish: 38.6 yearsEvangeline Parish38.6St. Charles Parish: 38.6 yearsSt. Charles Parish38.6Caddo Parish: 38.5 yearsCaddo Parish38.5Tensas Parish: 45.4 yearsTensas Parish45.4East Feliciana Parish: 44.7 yearsEast Feliciana Parish44.7Union Parish: 44.3 yearsUnion Parish44.3West Feliciana Parish: 44.3 yearsWest Feliciana Parish44.3Claiborne Parish: 44.1 yearsClaiborne Parish44.1Pointe Coupee Parish: 43.6 yearsPointe Coupee Parish43.6Bienville Parish: 43.3 yearsBienville Parish43.3West Carroll Parish: 43.1 yearsWest Carroll Parish43.1Webster Parish: 42.7 yearsWebster Parish42.7Sabine Parish: 42.6 yearsSabine Parish42.6Assumption Parish: 42 yearsAssumption Parish42Jackson Parish: 41.6 yearsJackson Parish41.6Cameron Parish: 41.4 yearsCameron Parish41.4St. Helena Parish: 41.3 yearsSt. Helena Parish41.3Morehouse Parish: 41.2 yearsMorehouse Parish41.2Caldwell Parish: 41 yearsCaldwell Parish41De Soto Parish: 40.8 yearsDe Soto Parish40.8Iberville Parish: 40.7 yearsIberville Parish40.7St. Tammany Parish: 40.7 yearsSt. Tammany Parish40.7Washington Parish: 40.7 yearsWashington Parish40.7Red River Parish: 40.6 yearsRed River Parish40.6Catahoula Parish: 40.2 yearsCatahoula Parish40.2Richland Parish: 40.2 yearsRichland Parish40.2Avoyelles Parish: 40 yearsAvoyelles Parish40St. James Parish: 40 yearsSt. James Parish40Winn Parish: 40 yearsWinn Parish40St. Mary Parish: 39.7 yearsSt. Mary Parish39.7Franklin Parish: 39.6 yearsFranklin Parish39.6Jefferson Parish: 39.4 yearsJefferson Parish39.4Allen Parish: 39.3 yearsAllen Parish39.3St. Martin Parish: 39.3 yearsSt. Martin Parish39.3Concordia Parish: 39 yearsConcordia Parish39St. John the Baptist Parish: 38.8 yearsSt. John the Baptist Parish38.8Beauregard Parish: 38.7 yearsBeauregard Parish38.7Grant Parish: 38.7 yearsGrant Parish38.7Rapides Parish: 38.7 yearsRapides Parish38.7St. Landry Parish: 38.7 yearsSt. Landry Parish38.7Evangeline Parish: 38.6 yearsEvangeline Parish38.6St. Charles Parish: 38.6 yearsSt. Charles Parish38.6Caddo Parish: 38.5 yearsCaddo Parish38.5
years. Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Retrieved 2026-10-12.

Full ranking

RankCounties2018
years		Change on 2017
1Tensas Parish45.4+0.8
2East Feliciana Parish44.7+0.4
3Union Parish44.3+0.5
3West Feliciana Parish44.30
5Claiborne Parish44.1+0.5
6Pointe Coupee Parish43.6+0.6
7Bienville Parish43.3+0.7
8West Carroll Parish43.1+0.4
9Webster Parish42.7+0.4
10Sabine Parish42.6+0.4
11Assumption Parish42+0.6
12Jackson Parish41.6+0.3
13Cameron Parish41.4-0.2
14St. Helena Parish41.3+0.2
15Morehouse Parish41.2+0.3
16Caldwell Parish41+0.1
17De Soto Parish40.8+0.1
18Iberville Parish40.7+0.4
18St. Tammany Parish40.7+0.2
18Washington Parish40.7+0.2
21Red River Parish40.6-0.4
22Catahoula Parish40.2+0.9
22Richland Parish40.2+0.6
24Avoyelles Parish40+0.3
24St. James Parish40+0.3
24Winn Parish40+0.1
27St. Mary Parish39.7+0.6
28Franklin Parish39.6+0.4
29Jefferson Parish39.4+0.2
30Allen Parish39.3+0.1
30St. Martin Parish39.3+0.7
32Concordia Parish39+0.1
33St. John the Baptist Parish38.8+0.3
34Beauregard Parish38.7-0.2
34Grant Parish38.7+0.1
34Rapides Parish38.7+0.4
34St. Landry Parish38.7+0.5
38Evangeline Parish38.6+0.6
38St. Charles Parish38.6+0.4
40Caddo Parish38.5+0.5
41Jefferson Davis Parish38.40
41Vermilion Parish38.4+0.4
43Acadia Parish38.3+0.5
43Iberia Parish38.3+0.6
45Lafourche Parish37.8+0.3
45LaSalle Parish37.8+0.2
47Terrebonne Parish37.3+0.4
48Madison Parish36.9+0.3
49West Baton Rouge Parish36.7+0.3
50Calcasieu Parish36.6+0.2
51Plaquemines Parish36.40
52Livingston Parish36.3+0.3
53Natchitoches Parish36.2+0.5
54Tangipahoa Parish36.1+0.3
55Ouachita Parish35.9+0.3
56Ascension Parish35.8+0.2
56Lafayette Parish35.8+0.4
58Bossier Parish35.7+0.3
58Orleans Parish35.7+0.3
60East Carroll Parish35.4+0.3
61East Baton Rouge Parish34.7+0.3
62St. Bernard Parish34.1+0.3
63Vernon Parish32.4+0.5
64Lincoln Parish29.3+0.4

Other periods

About this ranking

Age that divides the resident population of a US county into two halves of equal size on 1 July, from Census Bureau population estimates calculated by single year of age.

Counties only: the county file has no state or national medians, and medians cannot be added up. A single-year estimate, unlike median_age, which for US places is a five-year American Community Survey estimate.

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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. 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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage (Counties in Louisiana by median age on 1 July (US county estimates), 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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage, Counties in Louisiana by median age on 1 July (US county estimates), 2018. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Counties in Louisiana by median age on 1 July (US county estimates), 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/median-age-july-1-us-counties/louisiana-counties?period=2018.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage, Counties in Louisiana by median age on 1 July (US county estimates), 2018 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/median-age-july-1-us-counties/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: median age (MEDIAN\_AGE\_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage: Counties in Louisiana by median age on 1 July (US county estimates), 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/median-age-july-1-us-counties/louisiana-counties?period=2018. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: median age (MEDIAN\_AGE\_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. 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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage: Counties in Louisiana by median age on 1 July (US county estimates), 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/median-age-july-1-us-counties/louisiana-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/louisiana-counties?period=2018.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. 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 median age on 1 July (US county estimates)?

Tensas Parish, with 45.4 years in 2018, according to the U.S. Census Bureau.

Which county has the lowest median age on 1 July (US county estimates)?

Lincoln Parish, with 29.3 years 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: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Retrieved 2026-10-12.

Median age on 1 July (US county estimates): other rankings

Counties in Louisiana: more rankings