St. Mary Parish, Louisiana: commercial real estate data.
St. Mary Parish, Louisiana had an estimated 46,799 residents on July 1, 2024, down 5.3 percent since the 2020 census base of 49,408, across 555 square miles. County output reached $3.53 bn in 2024, 1,083 establishments operate here, and the SBA record carries 16 7(a) approvals worth $22.8 m since FY2020.
Underlined figures are computed by MMCG Analytics, not published by the agency.
St. Mary Parish
How many people live in St. Mary Parish
- Population, American Community Survey 2020-202447,828
- Households18,463
- Average household size2.59
- Median household income$52,576
- Median age39.7
- Median gross rent$848 per month
- Median owner-occupied home value$138,900
- Home value to household income2.6 times
- Annual rent as a share of median income19.4 percent
- Adults 25 and over with a bachelor degree or higher13.7 percent
- Adults 25 and over with a graduate degree4.1 percent
- Adults 25 and over32,517
- Population under 1811,697
- Share under 1824.5 percent
- Population 65 and over8,771
- Share 65 and over18.3 percent
- Working age population, 18 to 6427,360
- Civilian labor force20,221
- Unemployment rate5.4 percent
- Labor force participation, adults 18 and over56.0 percent
- Rank by population among Louisiana parishes23rd of 64
- Rank by population among US county-equivalents, Puerto Rico included1044th of 3,222
St. Mary Parish is the 23rd largest of 64 Louisiana parishes by population. A median home costs 2.6 times median household income, which is affordable by national standards. Residents under 18 outnumber those 65 and over, at 24.5 percent against 18.3 percent, a household formation profile rather than a retirement one.
US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
St. Mary Parish
Is St. Mary Parish's population growing?
- Population, July 1, 202446,799
- Census 2020 base population49,408
- Population change since the 2020 census base-5.28 percent
- Population change, 2023 to 2024-332
- Births, 2024582
- Deaths, 2024680
- Natural change, 2024-98
- Net domestic migration, 2024-473
- Net international migration, 2024237
- Total net migration, 2024-236
- Cumulative net domestic migration, 2021 to 2024-2,657
- Rank by growth among US county-equivalents2999th of 3,144
The county has lost 5.28 percent of its population since the 2020 census base. The population fell in 2024 from both sources: deaths exceeded births and more people left than moved in.
US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
St. Mary Parish
Where are people moving to St. Mary Parish from?
- Tax returns filed by households arriving784
- People arriving, from those returns1,481
- Tax returns filed by households leaving1,002
- Net household movement-218
- Adjusted gross income arriving$27.3 m
- Net adjusted gross income movement$-15.9 m
- Average income of an arriving household$34,758
- Average income of a leaving household$43,105
- Largest single originTerrebonne Parish (108 households)
- Largest single destinationLafayette Parish (188 households)
| Origin | Households | People | Adjusted gross income |
|---|---|---|---|
| Terrebonne Parish | 108 | 215 | $3.0 m |
| Iberia Parish | 91 | 181 | $2.8 m |
| Lafayette Parish | 77 | 138 | $2.7 m |
| Lafourche Parish | 72 | 136 | $2.4 m |
| Assumption Parish | 49 | 100 | $1.8 m |
| St. Martin Parish | 30 | 52 | $1.3 m |
| East Baton Rouge Parish | 29 | 43 | $858,000 |
Households arriving report $8,347 less average income than households leaving, which drains spending power even where headcount holds up. The largest single source of arrivals is Terrebonne Parish, which is the catchment a retail or multifamily study should look at first.
US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
St. Mary Parish
What is the St. Mary Parish economy?
- County GDP, 2024$3.53 bn
- County GDP, 2023$3.57 bn
- GDP change, 2023 to 2024-1.2 percent
- GDP change over five years40.2 percent
- Rank by GDP among the Louisiana areas BEA publishes20th of 64
- Rank by GDP among the US county areas BEA publishes889th of 3,127
- GDP per resident$73,757
Output grew -1.2 percent in the latest year and 40.2 percent over five, which is the trend line a lender will read behind any single year figure.
US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024.
St. Mary Parish
Employment by industry in St. Mary Parish
- Covered employment, annual average19,838
- Establishments reporting1,436
- Average annual pay$61,932
- Average weekly wage$1,191
- Manufacturing, employment2,840
- Manufacturing, average annual pay$82,029
- Retail trade, employment2,019
- Retail trade, average annual pay$32,076
- Health care and social assistance, employment1,974
- Health care and social assistance, average annual pay$38,306
- Mining, quarrying, and oil and gas extraction, employment1,638
- Mining, quarrying, and oil and gas extraction, average annual pay$118,540
- Administrative and support and waste management services, employment1,427
- Transportation and warehousing, employment1,418
| Sector | Employment | Establishments | Average annual pay |
|---|---|---|---|
| Manufacturing | 2,840 | 89 | $82,029 |
| Retail trade | 2,019 | 192 | $32,076 |
| Health care and social assistance | 1,974 | 121 | $38,306 |
| Mining, quarrying, and oil and gas extraction | 1,638 | 30 | $118,540 |
| Administrative and support and waste management services | 1,427 | 93 | $42,371 |
| Transportation and warehousing | 1,418 | 94 | $111,153 |
| Accommodation and food services | 1,349 | 102 | $20,553 |
| Construction | 926 | 106 | $70,741 |
Manufacturing is the largest private sector at 2,840 jobs, 14.3 percent of covered employment.
US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
St. Mary Parish
How many businesses are in St. Mary Parish?
- Establishments, all industries1,083
- Employment at those establishments18,400
- Annual payroll$1.10 bn
- Establishments per 1,000 residents22.6
These are counts of establishments physically operating in the county, not listings, so they are the supply side a feasibility study measures demand against. County Business Patterns counts private establishments with paid employees in March 2023, while the Quarterly Census of Employment and Wages above counts every unemployment-insured employer, public ones included, as a 2024 annual average, so the two establishment and employment counts differ.
US Census Bureau, County Business Patterns, 2023.
St. Mary Parish
Building permits in St. Mary Parish
- Housing units authorized by permit, 202447
- Declared construction value permitted$8.9 m
- Single family units authorized27
- Multifamily units authorized20
- Multifamily share of units42.6 percent
- Average declared value per unit$188,585
- Units authorized per 1,000 households2.5
Multifamily is 42.6 percent of units authorized, so the pipeline is being built for renters rather than buyers.
US Census Bureau, Building Permits Survey, 2024 annual.
St. Mary Parish
SBA loans in St. Mary Parish (7(a) and 504)
- 7(a) approvals recorded16
- 7(a) gross approval dollars$22.8 m
- Average 7(a) approval$1,426,606
- Median 7(a) approval$741,000
- Largest single approval$5,000,000
- Jobs reported supported, 7(a)531
- Jobs per approval33.2
- Distinct 7(a) lenders active14
- Distinct industries receiving approvals13
- Median 7(a) term120 months
- Share of loans on real estate terms, 240 months or longer25.0 percent
- Loans on real estate terms4
- Loans on working capital terms, 120 months or shorter10
- Franchise loans3
- Franchise share of approvals18.8 percent
- Leading industry by approval countHotels (except Casino Hotels) and Motels (3)
- 504 approvals recorded4
- 504 gross approval dollars$4.8 m
- Average 504 approval$1,192,500
- Median 504 approval$615,500
- Distinct CDCs active2
- 504 jobs per approval15.8
- 504 jobs per million dollars approved13.2
- Combined SBA approval dollars, 7(a) FY2020 to FY2026 and 504 FY2010 to FY2026$27.6 m
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30. US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
St. Mary Parish
SBA loan default and charge-off rates in St. Mary Parish
Do SBA loans in St. Mary Parish get paid back?
- Loans with a final outcome recorded2
- Paid in full2
- Charged off0
- Status: Paid in full2
- Status: Exempt from disclosure12
- Status: Cancelled2
Only 2 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published.
Compare against the national and state SBA charge-off rates, computed the same way over resolved loans only.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
St. Mary Parish
SBA lending by place in St. Mary Parish
- Borrower cities with recorded lending5
- Morgan City, approvals11
- Franklin, approvals2
- Amelia, approvals1
- Jeanerette, approvals1
- Berwick, approvals1
| Borrower city | Approvals | Gross approval dollars |
|---|---|---|
| Morgan City | 11 | $8,478,500 |
| Franklin | 2 | $10,000,000 |
| Amelia | 1 | $4,200,000 |
| Jeanerette | 1 | $100,000 |
| Berwick | 1 | $47,200 |
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
St. Mary Parish
How large is St. Mary Parish?
- Land area555 sq mi
- Rank by land area among Louisiana parishes45th of 64
- Width, east to west48 mi
- Height, north to south33.4 mi
- Geographies sharing a boundary4
- Residents per square mile of land86
- Establishments per square mile1.95
US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary vertices, TIGER county boundaries. US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year. US Census Bureau, County Business Patterns, 2023.
St. Mary Parish
Flood risk in St. Mary Parish
- Participation of the county's own NFIP community St. Mary Parish, unincorporated areasParticipating, community 220192
- Communities in the county in the NFIP Community Status Book7
- Of those, participating in the NFIP7
- NFIP participation rate100.0 percent
- Best Community Rating System class in the county A lower CRS class is a larger flood insurance premium discount.Class 9
- Communities carrying a CRS class1
- Radon levels in St. Mary Parish, EPA zone predicted average indoor radon screening level less than 2 pCi/LZone 3
The county's own community in the status book, unincorporated St. Mary Parish (community 220192), participates in the National Flood Insurance Program and carries no Community Rating System class, so no CRS premium discount applies there. The EPA places St. Mary Parish in radon zone 3, a predicted average indoor radon screening level less than 2 pCi/L. The zone is a screening prediction for the county and does not substitute for a test at an address. The best Community Rating System class among the county's communities is 9, which carries a flood insurance premium discount for policies written in that community. 100.0 percent of the county's listed communities participate in the National Flood Insurance Program, per Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26. US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Coverage
What this page does not hold.
Traffic counts, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Feasibility studies
When a St. Mary Parish site needs a document a lender will accept.
The same data layer behind this page is the one the studies are written from. A study for a St. Mary Parish site starts with the figures you are reading, carrying the same source and period into the credit file.
- Population, American Community Survey 2020-202447,828
- Households18,463
- Average household size2.59
- Median household income$52,576
- Median age39.7
Common questions
St. Mary Parish questions, answered from the record.
How many people live in St. Mary Parish, Louisiana?
The Census Bureau estimates 46,799 residents on July 1, 2024 (US Census Bureau, Population Estimates Program, Vintage 2024). The American Community Survey 2020-2024 five-year estimate is 47,828, in 18,463 households, ranking 23rd of 64 Louisiana counties. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
Is St. Mary Parish's population growing?
The population has fallen 5.28 percent since the 2020 census base of 49,408, to 46,799 on July 1, 2024. In 2024 there were 582 births against 680 deaths, with net migration of -236. Source: US Census Bureau, Population Estimates Program, Vintage 2024, Vintage 2024, estimates 2020 to 2024.
What is the median household income in St. Mary Parish?
$52,576. The median owner-occupied home is valued at $138,900, which is 2.6 times income, and median gross rent is $848 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, 2020-2024 5-year.
How many businesses are in St. Mary Parish?
1,083 establishments, employing 18,400 people with an annual payroll of $1.10 bn. These are establishments physically operating in the county, not listings. Source: US Census Bureau, County Business Patterns, 2023.
What is employment by industry in St. Mary Parish?
Manufacturing is the largest private sector at 2,840 jobs, 14.3 percent of covered employment. Covered employment averages 19,838 jobs at an average annual pay of $61,932, or $1,191 a week. Source: US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages.
How much SBA lending happens in St. Mary Parish?
16 7(a) approvals totaling $22.8 m since FY2020, across 14 lenders, with a median approval of $741,000, plus 4 504 approvals worth $4.8 m since FY2010. These are approvals recorded in the release, not loans disbursed.
How many building permits were issued in St. Mary Parish?
47 housing units were authorized by permit in 2024, with a declared construction value of $8.9 m. Multifamily was 42.6 percent of units. Source: US Census Bureau, Building Permits Survey, 2024 annual.
What is the radon zone for St. Mary Parish?
Zone 3, a predicted average indoor radon screening level less than 2 pCi/L. Source: US EPA, Map of Radon Zones, county spreadsheet, 2024-05 publication, EPA 402/A-16/001.
Where do people moving to St. Mary Parish come from?
The largest single origin is Terrebonne Parish, with 108 households. Arriving households report an average income of $34,758 against $43,105 for those leaving. Source: US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Are traffic counts available for St. Mary Parish on this page?
No. Annual average daily traffic resolves in the platform rather than in this dataset, so no AADT figure is printed here. It is a gap we know about rather than a figure we estimated.
Is zoning published for St. Mary Parish?
No. Nothing on this page presents parcel level zoning, and where a statutory framework applies it is marked as the statewide frame, to be confirmed locally.
St. Mary Parish
Cities and places in St. Mary.
12 Census places lie wholly or partly in St. Mary Parish. All 12 carry enough published place level data for a page of their own and are linked.
| Place | Type | Population | SBA 7(a) approvals, projects in this county | Lies in |
|---|---|---|---|---|
| Morgan City | city | 11,064 | 11 | Wholly in this county |
| Franklin | city | 6,461 | 2 | Wholly in this county |
| Patterson | city | 5,744 | None recorded | Wholly in this county |
| Berwick | town | 4,607 | 1 | Wholly in this county |
| Bayou Vista | CDP | 3,842 | None recorded | Wholly in this county |
| Baldwin | town | 1,962 | None recorded | Wholly in this county |
| Amelia | CDP | 1,712 | 1 | Wholly in this county |
| Charenton | CDP | 1,440 | None recorded | Wholly in this county |
| Centerville | CDP | 685 | None recorded | Wholly in this county |
| Sorrel | CDP | 564 | None recorded | Wholly in this county |
| Siracusaville | CDP | 515 | None recorded | Wholly in this county |
| Glencoe | CDP | 144 | None recorded | Wholly in this county |
A further 1 of the county's 16 SBA 7(a) approvals are to borrowers in cities that match no Census place in St. Mary Parish, the largest being Jeanerette (1). Those are postal cities, unincorporated areas and cities outside the county, so no place row claims them; they are counted in the county total above.
Nearby