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 2015, at 43.8 years. Lincoln Parish had the lowest, at 28.2 years. The median was 38.1 years. Source: the U.S. Census Bureau.

Highest43.8Tensas Parish

Lowest28.2Lincoln Parish

Median38.164 counties

Map of counties, 2015

Under 35
35 to 37
37 to 38
38 to 39
39 to 41
41 and over

years, 2015. 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, 2015

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	2015 years	Change on 2014
1	Tensas Parish	43.8	+0.3
2	West Feliciana Parish	43.6	+0.3
3	East Feliciana Parish	43.4	+0.5
4	Union Parish	43	+0.2
5	Pointe Coupee Parish	42.8	+0.1
6	Claiborne Parish	42.7	+0.5
7	Bienville Parish	42.6	-0.4
8	Sabine Parish	41.6	+0.1
8	Webster Parish	41.6	+0.5
10	West Carroll Parish	41.5	+0.9
11	Cameron Parish	40.9	-0.4
11	Jackson Parish	40.9	+0.3
13	Assumption Parish	40.7	+0.5
14	St. Helena Parish	40.6	-0.1
15	De Soto Parish	40.4	+0.3
15	Washington Parish	40.4	+0.1
17	Caldwell Parish	40.2	-0.4
17	Morehouse Parish	40.2	+0.1
17	Red River Parish	40.2	+0.2
17	St. Tammany Parish	40.2	+0.1
21	Winn Parish	40	0
22	Iberville Parish	39.4	+0.1
23	Avoyelles Parish	39.2	+0.2
23	St. James Parish	39.2	+0.1
25	Franklin Parish	39.1	+0.2
26	Jefferson Parish	38.9	+0.1
27	Richland Parish	38.7	+0.3
28	Beauregard Parish	38.5	+0.4
28	Catahoula Parish	38.5	-0.2
28	Concordia Parish	38.5	+0.4
31	Allen Parish	38.4	+0.4
32	Grant Parish	38.1	+0.5
32	Jefferson Davis Parish	38.1	0
32	St. Mary Parish	38.1	+0.1
35	St. Martin Parish	37.9	+0.1
36	Rapides Parish	37.8	+0.2
36	St. John the Baptist Parish	37.8	+0.2
38	St. Charles Parish	37.7	+0.3
38	St. Landry Parish	37.7	+0.3
40	LaSalle Parish	37.4	-0.2
41	Vermilion Parish	37.3	+0.2
42	Caddo Parish	37.2	+0.2
42	Evangeline Parish	37.2	+0.1
44	Acadia Parish	36.9	+0.4
44	Lafourche Parish	36.9	+0.1
46	Iberia Parish	36.7	+0.2
47	Calcasieu Parish	36.3	0
48	Plaquemines Parish	35.9	0
48	West Baton Rouge Parish	35.9	+0.1
50	Madison Parish	35.8	+0.6
51	Terrebonne Parish	35.7	+0.2
52	Livingston Parish	35.6	+0.2
53	Tangipahoa Parish	35.2	+0.3
54	Ascension Parish	35	+0.1
54	East Carroll Parish	35	0
54	Ouachita Parish	35	+0.2
57	Bossier Parish	34.9	+0.2
57	Natchitoches Parish	34.9	+0.6
59	Orleans Parish	34.8	+0.1
60	Lafayette Parish	34.4	+0.2
61	East Baton Rouge Parish	33.8	+0.3
62	St. Bernard Parish	33	+0.3
63	Vernon Parish	31	+0.4
64	Lincoln Parish	28.2	+0.1

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), 2015) [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), 2015. 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=2015. 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), 2015. 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=2015.

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), 2015 [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=2015 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_louisiana_by_2015,
  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), 2015}},
  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=2015. 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), 2015
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=2015
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/louisiana-counties?period=2015.
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=2015" width="760" height="500" title="Counties in Louisiana by median age on 1 July (US county estimates), 2015, 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 43.8 years in 2015, according to the U.S. Census Bureau.

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

Lincoln Parish, with 28.2 years in 2015.

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.