Demographics of Assumption Parish, Louisiana

Assumption Parish, Louisiana had 19,720 people on July 1, 2025, by the Census Bureau’s estimate: −1,242 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Assumption Parish, in four figures

19,720
Population: July 1, 2025, Vintage 2025 estimate.; −5.9%
Change since July 2020: −1,242 people.; 42.8 ±2.1
Median age: ACS 2020–⁠2024.; $51,423 ±$5,497
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Assumption Parish, Louisiana's population shrank 5.9% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Assumption Parish, Louisiana's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Assumption Parish, Louisiana's population shrank 5.9% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Assumption Parish, Louisiana's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	20,962	100.0	100.0
2021	20,703	98.8	100.2
2022	20,481	97.7	100.7
2023	20,217	96.4	101.6
2024	20,020	95.5	102.5
2025	19,720	94.1	103.1

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Population of Assumption Parish, Louisiana on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	20,962	−81	−16	0	−62
2021	20,703	−259	−60	+3	−207
2022	20,481	−222	−102	+1	−109
2023	20,217	−264	−72	+18	−210
2024	20,020	−197	−70	+4	−131
2025	19,720	−300	−72	−1	−226

Age, 2020–2024

The median age is 42.8 ±2.1: for men 41.1 ±2.1 and for women 44.2 ±4.5. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Assumption Parish by age, ACS 2020–2024
Age	People	Share	Louisiana	United States
Under 5	1,022 ±136	5.0% ±0.7	6.2% ±<0.1	5.6% ±<0.1
5 to 17	3,166 ±344	15.5% ±1.7	17.3% ±0.1	16.3% ±<0.1
18 to 24	1,615 ±317	7.9% ±1.5	9.1% ±0.1	9.1% ±<0.1
25 to 44	4,766 ±410	23.3% ±2.0	26.6% ±0.1	26.9% ±<0.1
45 to 64	5,748 ±480	28.1% ±2.3	24.1% ±0.1	24.8% ±<0.1
65 and over	4,167 ±395	20.3% ±1.9	16.7% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $51,423 ±$5,497, and income per person $31,516 ±$2,118, in 2024 dollars. The median is $60,756 ±$408 in Louisiana and $80,734 ±$166 in the United States.

Households by income

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Households in Assumption Parish by income, ACS 2020–2024
Household income	Households	Share	Louisiana	United States
Under $25,000	2,043 ±381	23.1% ±4.3	22.4% ±0.3	14.6% ±<0.1
$25,000 to $49,999	2,228 ±415	25.2% ±4.6	20.2% ±0.3	16.7% ±<0.1
$50,000 to $74,999	1,504 ±287	17.0% ±3.2	15.9% ±0.2	15.5% ±<0.1
$75,000 to $99,999	946 ±232	10.7% ±2.6	11.7% ±0.2	12.6% ±<0.1
$100,000 to $149,999	1,062 ±237	12.0% ±2.7	14.8% ±0.3	17.5% ±<0.1
$150,000 to $199,999	540 ±164	6.1% ±1.8	7.3% ±0.2	9.6% ±<0.1
$200,000 or more	507 ±180	5.7% ±2.0	7.8% ±0.2	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Assumption Parish by age, ACS 2020–2024
Age	Below poverty	Rate	Louisiana	United States
All ages	3,111 ±585	15.3% ±2.9	18.9% ±0.3	12.5% ±0.1
Under 18	628 ±219	15.0% ±5.0	25.4% ±0.5	16.1% ±0.1
18 to 59	1,772 ±426	17.0% ±4.0	17.7% ±0.3	11.6% ±0.1
60 and over	711 ±214	12.4% ±3.6	15.2% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Assumption Parish, ACS 2020–2024
Measure	Assumption Parish	Louisiana	United States
Housing units	10,066 ±18	2,108,902 ±333	143,775,355 ±10,234
Occupied	87.7% ±2.5	85.6% ±0.2	89.9% ±0.1
Vacant	12.3% ±2.5	14.4% ±0.2	10.1% ±0.1
Owner occupied	84.8% ±2.9	67.4% ±0.4	65.2% ±0.3
Renter occupied	15.2% ±3.1	32.6% ±0.3	34.8% ±0.1
Median home value	$150,300 ±$22,891	$216,500 ±$1,367	$332,700 ±$236
Median gross rent	$810 ±$64	$1,064 ±$8	$1,413 ±$2
Median year built	1983 ±3	1983 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Assumption Parish by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Louisiana	United States
Hispanic or Latino	872 ±0	4.3% ±<0.1	7.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	13,093 ±125	63.9% ±0.6	55.7% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	5,664 ±342	27.7% ±1.7	30.5% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 402	0% to 2.0%	1.7% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	143 ±44	0.7% ±0.2	0.4% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 26	0% to 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 70	0% to 0.3%	0.5% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	239 to 759	1.2% to 3.7%	3.8% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Assumption Parish by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Louisiana	United States
Born in the state	18,962 ±456	92.6% ±2.2	77.2% ±0.2	57.3% ±<0.1
Born in another state	1,025 ±264	5.0% ±1.3	17.2% ±0.2	26.9% ±<0.1
Born a citizen outside the states	0 to 15	0% to 0.1%	0.7% ±<0.1	1.7% ±<0.1
Born abroad	171 to 811	0.8% to 4.0%	4.9% ±0.1	14.1% ±<0.1
Naturalized citizens	40 to 482	0.2% to 2.4%	2.0% ±0.1	7.4% ±<0.1
Not citizens	46 to 414	0.2% to 2.0%	2.9% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Assumption Parish among the counties of Louisiana

43rd of 64 by population, July 2025. Every one is listed on the Louisiana page.

Counties of Louisiana near Assumption Parish in population, July 2025
County	July 2025	Change since 2020
Allen Parish	22,672	< +0.1%
Plaquemines Parish	22,256	−5.3%
Grant Parish	22,075	−0.3%
Sabine Parish	21,834	−1.2%
Union Parish	20,561	−2.5%
Assumption Parish	19,720	−5.9%
Richland Parish	19,582	−2.2%
Pointe Coupee Parish	19,520	−5.6%
Franklin Parish	19,002	−3.6%
St. James Parish	18,938	−5.9%
East Feliciana Parish	18,911	−2.8%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026