St. Mary Parish, Louisiana

12 cities & places have their primary county here.

Population: 48,455
Median household income: $51,768
Median home value: $128,000

Home to 48,455 residents, St. Mary Parish is one of Louisiana's counties. 12 cities and places have their primary county here. At $51,768, its median household income sits below Louisiana's $60,023.

Between 2019 and 2023, St. Mary Parish's population declined 4.9% from 50,968 to 48,455, while its median household income rose 27.9% from $40,485 to $51,768.

White (non-Hispanic) residents are the largest group, 53.9% of the population. 84.1% of workers drive to work alone.

Demographics

ACS 2019–2023

Population: 48,455
Median age: 39.7 yrs
Median household income: $51,768
Median home value: $128,000
Median gross rent: $839
Housing units: 22,510
Homeownership rate: 69.8%
Bachelor's degree or higher: 13.1%
Unemployment rate: 5.4%

Trends

ACS 5-year · 2019–2023

Population

50,96848,455

Median household income

$40,485$51,768

Median home value

$106,900$128,000

Median gross rent

$781$839

Year	Population	Median household income	Median home value	Median gross rent
2019	50,968	$40,485	$106,900	$781
2020	50,020	$40,218	$105,800	$784
2021	49,818	$43,097	$110,200	$799
2022	49,114	$47,322	$128,000	$829
2023	48,455	$51,768	$128,000	$839

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 56.7%

5 to 1717.7%

18 to 247.6%

25 to 3411.5%

35 to 4411.9%

45 to 5411.9%

55 to 6414.7%

65 to 7410.5%

75 and over7.5%

	Count	Share
Under 5	3,239	6.7%
5 to 17	8,560	17.7%
18 to 24	3,695	7.6%
25 to 34	5,581	11.5%
35 to 44	5,787	11.9%
45 to 54	5,772	11.9%
55 to 64	7,117	14.7%
65 to 74	5,084	10.5%
75 and over	3,620	7.5%

Race & ethnicity

	Count	Share
White (non-Hispanic)	26,135	53.9%
Black or African American	13,994	28.9%
American Indian & Alaska Native	750	1.5%
Asian	633	1.3%
Native Hawaiian & Pacific Islander	11	0.0%
Some other race	132	0.3%
Two or more races	2,264	4.7%
Hispanic or Latino (any race)	4,536	9.4%

Educational attainment (age 25+)

No high school diploma19.4%

High school graduate46.0%

Some college or associate's21.4%

Bachelor's degree8.8%

Graduate or professional degree4.3%

	Count	Share
No high school diploma	6,399	19.4%
High school graduate	15,169	46.0%
Some college or associate's	7,068	21.4%
Bachelor's degree	2,907	8.8%
Graduate or professional degree	1,418	4.3%

Commute to work

Mean travel time to work: 25 min

Drove alone84.1%

Carpooled8.2%

Public transit0.0%

Walked1.3%

Bicycle0.5%

Worked from home5.2%

Other means0.7%

How workers get to work

	Count	Share
Drove alone	16,160	84.1%
Carpooled	1,567	8.2%
Public transit	1	0.0%
Walked	242	1.3%
Bicycle	100	0.5%
Worked from home	1,006	5.2%
Other means	142	0.7%

Travel time

	Count	Share
Under 15 min	8,542	46.9%
15 to 29 min	4,898	26.9%
30 to 44 min	2,146	11.8%
45 to 59 min	949	5.2%
60+ min	1,677	9.2%

Households

Average household size: 2.55
Poverty rate: 22.1% (10,553 of 47,806)

	Count	Share
Family households	12,364	66.1%
Nonfamily households	6,341	33.9%

Housing

Median year structure built: 1976

Occupancy

	Count	Share
Occupied	18,705	83.1%
Vacant	3,805	16.9%

Tenure (of occupied units)

	Count	Share
Owner-occupied	13,064	69.8%
Renter-occupied	5,641	30.2%

1-unit, detached68.5%

1-unit, attached0.5%

2 to 4 units7.2%

5 to 19 units3.7%

20 or more units1.4%

Mobile home & other18.7%

Units in structure

	Count	Share
1-unit, detached	15,421	68.5%
1-unit, attached	104	0.5%
2 to 4 units	1,629	7.2%
5 to 19 units	837	3.7%
20 or more units	310	1.4%
Mobile home & other	4,209	18.7%

Geography

County GEOID: 22101
State: Louisiana
Land area: 559 sq mi
Water area: 561 sq mi
Center point: 29.6293, -91.4638