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 2020, at 46.9 years. Lincoln Parish had the lowest, at 29.8 years. The median was 39.5 years. Source: the U.S. Census Bureau.

Highest46.9Tensas Parish

Lowest29.8Lincoln Parish

Median39.564 counties

Map of counties, 2020

Under 37
37 to 39
39 to 40
40 to 41
41 to 43
43 and over

years, 2020. 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, 2020

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

Rank	Counties	2020 years	Change on 2019
1	Tensas Parish	46.9	+0.5
2	East Feliciana Parish	45.6	+0.3
3	West Feliciana Parish	44.9	+0.3
4	Claiborne Parish	44.8	+0.3
5	Union Parish	44.6	-0.2
6	West Carroll Parish	44	+0.4
7	Bienville Parish	43.7	+0.3
7	Pointe Coupee Parish	43.7	-0.2
9	Sabine Parish	43.1	-0.1
9	Webster Parish	43.1	0
11	St. Helena Parish	43	+1.2
12	Assumption Parish	42.9	+0.4
13	Jackson Parish	42.5	+0.3
13	Morehouse Parish	42.5	+0.7
15	Cameron Parish	41.7	-0.6
15	Iberville Parish	41.7	+0.4
17	Washington Parish	41.3	+0.3
18	Caldwell Parish	41.2	0
19	Catahoula Parish	41.1	+0.5
19	St. Tammany Parish	41.1	+0.2
21	De Soto Parish	41	-0.1
22	St. James Parish	40.8	+0.6
23	Franklin Parish	40.3	+0.5
23	Richland Parish	40.3	-0.4
25	Avoyelles Parish	40.2	-0.1
25	Red River Parish	40.2	-0.4
27	St. Mary Parish	40.1	+0.2
28	Concordia Parish	40	+0.4
28	St. Martin Parish	40	+0.3
28	Winn Parish	40	-0.1
31	Jefferson Parish	39.7	+0.1
32	Allen Parish	39.5	+0.1
32	St. John the Baptist Parish	39.5	+0.2
34	Grant Parish	39.4	+0.3
35	Caddo Parish	39.3	+0.3
35	St. Landry Parish	39.3	+0.1
37	Iberia Parish	39.2	+0.2
37	Vermilion Parish	39.2	+0.2
39	Evangeline Parish	39.1	+0.2
39	Rapides Parish	39.1	+0.1
41	St. Charles Parish	39	+0.2
42	Acadia Parish	38.9	+0.1
42	Jefferson Davis Parish	38.9	+0.1
44	Beauregard Parish	38.6	-0.4
45	Lafourche Parish	38.4	+0.1
46	Terrebonne Parish	38	+0.2
47	LaSalle Parish	37.9	-0.2
47	Madison Parish	37.9	+0.4
49	West Baton Rouge Parish	37.4	+0.3
50	Calcasieu Parish	37	+0.2
51	Natchitoches Parish	36.8	0
51	Plaquemines Parish	36.8	-0.1
53	Livingston Parish	36.6	+0.1
54	East Carroll Parish	36.5	+0.7
54	Ouachita Parish	36.5	+0.3
56	Lafayette Parish	36.4	+0.2
56	Tangipahoa Parish	36.4	-0.1
58	Bossier Parish	36.3	+0.3
58	Orleans Parish	36.3	+0.3
60	Ascension Parish	36.2	+0.2
61	East Baton Rouge Parish	35.1	+0.1
62	St. Bernard Parish	35	+0.3
63	Vernon Parish	32.9	+0.4
64	Lincoln Parish	29.8	+0.2

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), 2020) [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), 2020. 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=2020. 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), 2020. 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=2020.

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), 2020 [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=2020 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_louisiana_by_2020,
  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), 2020}},
  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=2020. 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), 2020
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=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/louisiana-counties?period=2020.
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  -

Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Embed code

<iframe src="https://invokely.ai/embed/rankings/median-age-july-1-us-counties/louisiana-counties?period=2020" width="760" height="500" title="Counties in Louisiana by median age on 1 July (US county estimates), 2020, chart from Invokely" loading="lazy" style="border:0;width:100%;max-width:760px" referrerpolicy="strict-origin-when-cross-origin"></iframe>

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Louisiana by median age on 1 July (US county estimates) using official data, and cite the source.

rank_places {"indicator":"median_age_pep","level":"province","within":"Louisiana","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=median_age_pep&level=province&within=Louisiana&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

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

Tensas Parish, with 46.9 years in 2020, according to the U.S. Census Bureau.

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

Lincoln Parish, with 29.8 years in 2020.

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.