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 2017, at 44.6 years. Lincoln Parish had the lowest, at 28.9 years. The median was 38.8 years. Source: the U.S. Census Bureau.

Highest44.6Tensas Parish

Lowest28.9Lincoln Parish

Median38.864 counties

Top 40 counties, 2017

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	2017 years	Change on 2016
1	Tensas Parish	44.6	-0.1
2	East Feliciana Parish	44.3	+0.4
2	West Feliciana Parish	44.3	+0.3
4	Union Parish	43.8	+0.3
5	Claiborne Parish	43.6	+0.7
6	Pointe Coupee Parish	43	+0.3
7	West Carroll Parish	42.7	+0.4
8	Bienville Parish	42.6	+0.2
9	Webster Parish	42.3	+0.3
10	Sabine Parish	42.2	+0.3
11	Cameron Parish	41.6	+0.4
12	Assumption Parish	41.4	+0.4
13	Jackson Parish	41.3	0
14	St. Helena Parish	41.1	+0.2
15	Red River Parish	41	+0.6
16	Caldwell Parish	40.9	+0.4
16	Morehouse Parish	40.9	+0.1
18	De Soto Parish	40.7	+0.3
19	St. Tammany Parish	40.5	+0.1
19	Washington Parish	40.5	+0.1
21	Iberville Parish	40.3	+0.3
22	Winn Parish	39.9	+0.2
23	Avoyelles Parish	39.7	+0.2
23	St. James Parish	39.7	+0.3
25	Richland Parish	39.6	+0.4
26	Catahoula Parish	39.3	+0.4
27	Allen Parish	39.2	+0.5
27	Franklin Parish	39.2	+0.3
27	Jefferson Parish	39.2	+0.2
30	St. Mary Parish	39.1	+0.7
31	Beauregard Parish	38.9	+0.3
31	Concordia Parish	38.9	+0.1
33	Grant Parish	38.6	+0.4
33	St. Martin Parish	38.6	+0.2
35	St. John the Baptist Parish	38.5	+0.3
36	Jefferson Davis Parish	38.4	+0.1
37	Rapides Parish	38.3	+0.2
38	St. Charles Parish	38.2	+0.3
38	St. Landry Parish	38.2	+0.5
40	Caddo Parish	38	+0.4
40	Evangeline Parish	38	+0.4
40	Vermilion Parish	38	+0.4
43	Acadia Parish	37.8	+0.5
44	Iberia Parish	37.7	+0.5
45	LaSalle Parish	37.6	+0.2
46	Lafourche Parish	37.5	+0.4
47	Terrebonne Parish	36.9	+0.7
48	Madison Parish	36.6	+0.6
49	Calcasieu Parish	36.4	0
49	Plaquemines Parish	36.4	+0.3
49	West Baton Rouge Parish	36.4	+0.3
52	Livingston Parish	36	+0.3
53	Tangipahoa Parish	35.8	+0.3
54	Natchitoches Parish	35.7	+0.4
55	Ascension Parish	35.6	+0.3
55	Ouachita Parish	35.6	+0.3
57	Bossier Parish	35.4	+0.3
57	Lafayette Parish	35.4	+0.6
57	Orleans Parish	35.4	+0.3
60	East Carroll Parish	35.1	-0.1
61	East Baton Rouge Parish	34.4	+0.4
62	St. Bernard Parish	33.8	+0.5
63	Vernon Parish	31.9	+0.6
64	Lincoln Parish	28.9	+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), 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: 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), 2017. 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=2017. 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), 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/median-age-july-1-us-counties/louisiana-counties?period=2017.

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

BibTeX

@misc{census_counties_in_louisiana_by_2017,
  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), 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/median-age-july-1-us-counties/louisiana-counties?period=2017. 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), 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/median-age-july-1-us-counties/louisiana-counties?period=2017
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/louisiana-counties?period=2017.
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 44.6 years in 2017, according to the U.S. Census Bureau.

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

Lincoln Parish, with 28.9 years 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: 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.