Auto · County · Louisiana
Gas stations in St. Mary Parish, LA
How St. Mary Parish, LA compares with other counties and the U.S. for gas stations: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 19 out of 100: Low
Ranked #2,223 of 2,358 scored counties
#45 of 56 scored counties in Louisiana
- Listings
- 34
- 26 chain locations (76%)
- Official establishments
- 28
- +12.0% since 2019
- Household spending a year
- $46.9M
- On gasoline and other fuels · $2,539 a household
- Spending per listing
- $1.4M
- 42% below the U.S.
- Listings per 10k households
- 18.4
- 69% above the U.S.
- Population, 2025
- 46,552
- −5.3% since 2020
See the gas stations around any address in St. Mary Parish
The site report maps the gas stations on map listings near the address, by name and distance, and sizes the households and spending around it. Or open the report at the center of St. Mary Parish. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
For gas stations, St. Mary Parish has a Groundwork market score of 19 (low): #2,223 of 2,358 scored counties and #45 of 56 scored counties in Louisiana. That puts it in the bottom quarter of counties.
Household spending on gasoline and other fuels in St. Mary Parish comes to about $46.9M a year: $2,539 per household, 2% below the U.S. average. Spread across 34 gas stations, that is $1.4M per station, 42% below the U.S. figure of $2.4M.
There are 34 gas stations on map listings in St. Mary Parish as of September 2026. Chain locations make up 76% of them, against 84% across the U.S. That comes to 18.4 for every 10,000 households, 69% above the U.S. rate of 10.9.
Official counts show 28 businesses with payroll classed as gasoline stations in St. Mary Parish in 2023, up 12.0% from 2019. That is one for every 659 households, against one for every 1,184 across the U.S. Population estimates put the population change in St. Mary Parish from 2020 to 2025 at −5.3%, against +3.1% for the U.S.
How St. Mary Parish compares
The same measures for Louisiana and the whole U.S. Spending per listing divides a year of household spending on all gasoline and other fuels by the gas stations counted, so it measures the demand for each competitor, not any business’s revenue. Households per establishment does the same with the official count.
| Measure | St. Mary Parish | Louisiana | U.S. |
|---|---|---|---|
| Listings per 10k households | 18.4 | 15.9 | 10.9 |
| Spending per listing | $1.4M | $1.6M | $2.4M |
| Households per official establishment | 659 | 807 | 1,184 |
| Official establishment growth, 2019–2023 | +12.0% | −7.1% | −3.1% |
| Population growth, 2020–2025 | −5.3% | −0.7% | +3.1% |
| Spending per household on gasoline and other fuels | $2,539 | $2,600 | $2,595 |
| Median household income | $52,576 | $60,756 | $80,734 |
| Groundwork market score | 19 | 13 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 25 → 28+12.0% over the period
- Employees, 2023
- 240
- Annual payroll, 2023
- $6M
- One-person businesses, 2023
- 0Businesses with no payroll
- Map listings, September 2026
- 3426 chain locations
- Listings at the U.S. rate for this spending
- 20The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 0
- Amount
- $0
SBA-backed loans to businesses classed as gasoline stations in St. Mary Parish, through June 2026, placed by the borrower’s ZIP code. Official establishments are businesses with payroll; the official counts leave out places with fewer than 3.
Population and households in St. Mary Parish
- Population, 2025 estimate
- 46,552−5.3% since 2020
- Households
- 18,463
- Median age
- 39.8
- Homes lived in by their owners
- 69%
- Vehicles per household
- 1.6
- Land area
- 559 sq. mi.
- People per square mile
- 86
- Median household income
- $52,576+29.9% vs. 2015–2019, before inflation
- Average household income
- $71,245
- Median home value
- $138,900
- Jobs located here
- 20,344
- Daytime population
- 47,916Residents who don’t work, plus everyone whose job is here
Looking at a specific site in St. Mary Parish?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the gas stations on map listings by name and distance.
Or open the report at the center of St. Mary Parish. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardGas stations across Louisiana
Every Louisiana market ranked →The highest-scoring counties in Louisiana for gas stations, numbered among those based in Louisiana, with St. Mary Parish marked.
Top counties in Louisiana
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1St. Tammany Parish, LA | 66 | 131 | 12.5 | $2.3M | +5.3% | #530 of 2,358 |
| 2Livingston Parish, LA | 65 | 64 | 11.9 | $2.5M | +8.5% | #560 of 2,358 |
| 3Ascension Parish, LA | 64 | 78 | 16.4 | $1.9M | +6.4% | #607 of 2,358 |
| 4Bossier Parish, LA | 62 | 63 | 12.4 | $2.2M | +2.5% | #668 of 2,358 |
| 5Grant Parish, LA | 60 | 7 | 9.4 | $3.2M | −0.3% | #734 of 2,358 |
| 6Beauregard Parish, LA | 58 | 15 | 10.9 | $2.7M | +0.2% | #823 of 2,358 |
| 7Jefferson Parish, LA | 50 | 169 | 9.5 | $2.6M | −1.9% | #1,148 of 2,358 |
| 8Winn Parish, LA | 50 | 10 | 20.9 | $1.2M | +9.1% | #1,188 of 2,358 |
| 9Vernon Parish, LA | 48 | 17 | 9.3 | $3M | −7.3% | #1,246 of 2,358 |
| 10Orleans Parish, LA | 48 | 123 | 7.9 | $2.5M | −5.5% | #1,251 of 2,358 |
| 45St. Mary Parish, LA | 19 | 34 | 18.4 | $1.4M | −5.3% | #2,223 of 2,358 |
Other business types in St. Mary Parish
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many gas stations are in St. Mary Parish, LA?
As of September 2026, map listings count 34 gas stations in St. Mary Parish. 26 of them (76%) are chain locations. The listings count gas stations. Official counts show 28 businesses with payroll classed as gasoline stations in 2023, up 12.0% from 2019.
How much do households in St. Mary Parish, LA spend on gasoline and other fuels?
About $46.9M a year, or $2,539 per household. That is 2% below the U.S. average (an index of 98, where 100 is the U.S. average). Spread across the 34 gas stations on map listings, it comes to $1.4M per station. It is estimated from the incomes of the 18,463 households in St. Mary Parish and national spending patterns by income.
How does St. Mary Parish, LA compare with the U.S. for gas stations?
St. Mary Parish has 18.4 gas stations per 10,000 households, 69% above the U.S. rate of 10.9. Spending per station is $1.4M, 42% below the U.S. figure of $2.4M. At the U.S. ratio of gas stations to household spending, St. Mary Parish would have about 20, against 34 on map listings. There is one business with payroll in the industry for every 659 households, against one for every 1,184 across the U.S. The official count rose 12.0% from 2019 to 2023, against −3.1% for the U.S.
How fast is St. Mary Parish, LA growing?
Population estimates put St. Mary Parish at 46,552 people in 2025, down 5.3% since 2020, against +3.1% for the U.S. It has 18,463 households. Median household income in St. Mary Parish is $52,576, 35% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 29.9%, before inflation.
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. St. Mary Parish scores 19 for gas stations (low), #2,223 of 2,358 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in St. Mary Parish. It maps the gas stations on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
How the score works · Top markets for gas stations · All 56 business types in St. Mary Parish
Screening a site or an acquisition in St. Mary Parish?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of St. Mary Parish. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.