St. Martin Parish, LA

St. Martin Parish is located in south-central Louisiana, just outside Lafayette. The US Census Bureau reports its 2019 population as 53,431, nearly 60% of which for those older than 16 years of age is active in the workforce. As the Gateway to the Atchafalaya Basin, it covers nearly 740 square miles of picturesque sugar cane fields, low-lying swamp land, and rolling hills of moss-draped oaks.

The region has a historical agricultural and oil background, but today it is known for seafood manufacturing, preparation and packaging, cane sugar manufacturing and cemicia/plastics manufacturing.

Population

Population	2000	2010	2025	2030
St. Martin Parish, LA	48,578	52,155	51,264	50,618

Source: ESRI, 2025-09-30

Population by Age

Population	2025
0-4	3,012
5-9	3,172
10-14	3,304
15-19	3,326
20-24	2,873
25-29	2,985
30-34	3,094
35-39	3,079
40-44	3,366
45-49	3,068
50-54	2,984
55-59	3,324
60-64	3,517
65-69	3,585
70-74	2,651
75-79	1,888
80-84	1,177
85+	859
18+	39,735
Median Age	41

Source: ESRI, 2025-09-30

Population by Race

St. Martin Parish, LA	2025
Total	51,264.00
White Alone	63.65%
Black Alone	29.37%
American Indian Alone	0.42%
Asian Alone	0.84%
Pacific Islander Alone	0.02%
Some Other Race	1.63%
Two or More Races	4.07%
Hispanic Origin	3.63%
Diversity Index	54.10

Source: ESRI, 2025-09-30

Growth Rate

St. Martin Parish, LA	2025 - 2030
Population	-0.25%
Households	0.19%
Families	0.00%
Median Household Income	2%
Per Capita Income	2%

Source: ESRI, 2025-09-30

Housing

Households

Population	2000	2010	2025	2030
Households	17,163	19,215	20,774	20,970
Housing Units	20,244	21,940	24,410	24,683
Owner Occupied Units			16,541	16,754
Renter Occupied Units			4,233	4,216
Vacant Units			3,636	3,713

Source: ESRI, 2025-09-30

Home Value

St. Martin Parish, LA	2025	2030
Median Home Value	$174,714	$219,917
Average Home Value	$200,226	$231,692
<$50,000	1,967	1,758
$50,000 - $99,999	2,651	2,045
$100,000 - $149,999	2,228	1,637
$150,000 - $199,999	2,443	1,979
$200,000 - $249,999	2,207	2,405
$250,000 - $299,999	1,655	2,059
$300,000 - $399,999	2,160	2,993
$400,000 - $499,999	812	1,252
$500,000 - $749,999	333	531
$1,000,000 +	27	25

Source: ESRI, 2025-09-30

Housing Year Built

Year Range	Houses Built
2010 or Later	2,467
2000-2009	4,623
1990-1999	3,294
1980-1989	3,151
1970-1979	3,654
1960-1969	2,439
1950-1959	1,789
1940-1949	1,010
1939 or Before	908

Source: ESRI, 2025-09-30

Income

St. Martin Parish, LA	2025	2030
Median Household	$54,182	$59,852
Average Household	$74,919	$80,430
Per Capita	$30,414	$33,375

Source: ESRI, 2025-09-30

Household Income

St. Martin Parish, LA	2025
<$15,000	2,626
$15,000 - $24,999	2,216
$25,000 - $34,999	2,207
$35,000 - $49,999	2,643
$50,000 - $74,999	3,321
$75,000 - $99,999	2,487
$100,000 - $149,999	2,893
$150,000 - $199,999	1,513
$200,000+	868

Source: ESRI, 2025-09-30

Employees

Commute

Category	Commuters
Workers 16+	22,435
In-County Residents	9,516
Out-of-County Residents	12,648
Drive Alone	19,018
Carpooled	1,476
Public Transport	56
Work at Home	1,408
Motorcycle	0
Bicycle	41
Walked	273
Other	148
Less than 5 minutes	1,063
5-9 minutes	1,970
10-14 minutes	2,973
15-19 minutes	2,249
20-24 minutes	2,825
25-29 minutes	1,554
30-34 minutes	3,420
35-39 minutes	681
40-44 minutes	834
45-59 minutes	1,535
60-89 minutes	887
90+ minutes	1,036
Average Travel Time	28

Source: ESRI, 2025-09-30

Employees by NAICS

Category	Number
Total Employees	17,180
Agr/Forestry/Fish/Hunt	90
Mining	348
Utilities	74
Construction	2,485
Manufacturing	1,276
Wholesale Trade	1,106

Retail Trade	2,226
Motor Veh/Parts Dealers	418
Furn & Home Furnish Str	2
Electronics & Appl Store	18
Bldg Matl/Garden Equip	144
Food & Beverage Stores	730
Health/Pers Care Stores	132
Gasoline Stations	247
Clothing/Accessory Store	23
Sports/Hobby/Book/Music	76
General Merchandise Str	436

Transportation/Warehouse	295
Information	116

Finance & Insurance	341
Cntrl Bank/Crdt Intrmdtn	225
Sec/Cmdty Cntrct/Oth Inv	39
Insur/Funds/Trusts/Other	77

Real Estate/Rent/Leasing	316
Prof/Scientific/Tech Srv	573
Legal Services	135
Mgmt of Comp/Enterprises	6
Admin/Support/Waste Mgmt	234
Educational Services	2,357
HealthCare/Social Assist	1,971
Arts/Entertainment/Rec	327

Accommodation/Food Srvcs	1,421
Accommodation	137
Food Srv/Drinking Places	1,284

Other Srv excl Pub Admin	608
Auto Repair/Maintenance	98
Public Administration Emp	996

Source: ESRI, 2025-09-30

Educational Attainment (25+)

St. Martin Parish, LA	2025
<9th Grade	2,202
Some High School	3,473
GED	2,242
Graduated High School	13,991
Some College/No Degree	5,676
Associates Degree	2,449
Bachelor's Degree	3,957
Graduate Degree	1,587

Source: ESRI, 2025-09-30

Businesses

Businesses by NAICS

Category	Number
Total Businesses	1,623
Agr/Forestry/Fish/Hunt Bus	17
Mining Bus	14
Utilities Bus	9
Construction Bus	165
Manufacturing Bus	77
Wholesale Trade Bus	69

Retail Trade Bus	228
Motor Veh/Parts Dealers Bus	36
Furn & Home Furnish Str Bus	1
Electronics & Appl Store Bus	4
Bldg Matl/Garden Equip Bus	17
Food & Beverage Stores Bus	47
Health/Pers Care Stores Bus	25
Gasoline Stations Bus	32
Clothing/Accessory Store Bus	9
Sports/Hobby/Book/Music Bus	31
General Merchandise Str Bus	26

Transportation/Warehouse Bus	50
Information Bus	19

Finance & Insurance Bus	71
Cntrl Bank/Crdt Intrmdtn Bus	40
Sec/Cmdty Cntrct/Oth Inv Bus	10
Insur/Funds/Trusts/Other Bus	21

Real Estate/Rent/Leasing Bus	59
Prof/Scientific/Tech Srv Bus	96
Legal Services Bus	21
Mgmt of Comp/Enterprises Bus	2
Admin/Support/Waste Mgmt Bus	55
Educational Services Bus	35
HealthCare/Social Assist Bus	106
Arts/Entertainment/Rec Bus	60

Accommodation/Food Srvcs Bus	149
Accommodation Bus	21
Food Srv/Drinking Places Bus	128

Other Srv excl Pub Admin Bus	172
Auto Repair/Maintenance Bus	31
Public Administration Bus	76

Source: ESRI, 2025-09-30