The typical owner-occupied home in St. Mary Parish is worth about $138,900, 36% below the Louisiana median of $216,500 and 58% below the national median of $332,700. Owners pay a median $545 a year in property taxes, about 0.39% of their home's value, lower than the Louisiana rate of 0.55%. The median household earns $52,576 a year, so the median home costs 2.6 times the median income (3.6 times for Louisiana). 69% of occupied homes here are lived in by their owners, and 35% of those owners still have a mortgage.
St. Mary Parish at a glance
| St. Mary Parish | Louisiana | U.S. | |
|---|---|---|---|
| Median home value | $138,900 | $216,500 | $332,700 |
| Median property tax paid per year | $545 | $1,180 | $3,119 |
| Property tax as a share of value | 0.39% | 0.55% | 0.94% |
| Median household income | $52,576 | $60,756 | $80,734 |
| Homes lived in by their owners | 69% | 67% | 65% |
| Owner homes with a mortgage | 35% | 52% | 61% |
| Median monthly costs, owners with a mortgage | $1,420 | $1,604 | $1,963 |
| Those costs as a share of the owners' income | 19.3% | 20.4% | 21.0% |
| Median rent | $848 | $1,064 | $1,413 |
| Rent as a share of renters' income | 30.3% | 32.8% | 30.6% |
| Median year homes were built | 1976 | 1983 | 1980 |
| Vacant homes | 18.0% | 14.4% | 10.1% |
| Population | 47,828 | 4,611,961 | 334,922,499 |
What a typical home costs per month in St. Mary Parish
At this week's average 30-year rate of 7.11%, buying the median St. Mary Parish home of $138,900 with 20% down costs about $851 a month, including property taxes and insurance. With an FHA loan and 3.5% down, it's about $1,082, because the loan is bigger and FHA adds mortgage insurance.
Lenders usually want housing costs under about 28% of gross income, which means an income of roughly $36,451 for the 20%-down payment. That payment is 19% of the median St. Mary Parish household income of $52,576; at that income and 20% down, the 28% guideline points to a home of about $200,000.
The median rent here is $848 a month, so owning the median home costs about $3 a month more than renting, before you count the equity you build and any tax benefits.
| Down payment | $27,780 |
|---|---|
| Loan amount | $111,120 |
| Principal and interest | $748 |
| Property taxes (0.39% a year) | $45 |
| Homeowners insurance (our estimate, 0.5% a year) | $58 |
| PMI | $0 |
| Total per month | $851 |
Change the numbers in the calculator
| Down payment | $4,862 |
|---|---|
| Loan amount | $136,384 |
| Principal and interest | $917 |
| Property taxes (0.39% a year) | $45 |
| Homeowners insurance (our estimate, 0.5% a year) | $58 |
| FHA mortgage insurance | $61 |
| Total per month | $1,082 |
Change the numbers in the calculator
Questions about home buying in St. Mary Parish
What is the median home value in St. Mary Parish?
About $138,900 for owner-occupied homes, according to the Census Bureau's 2020–2024 American Community Survey.
How much are property taxes in St. Mary Parish?
Homeowners pay a median $545 a year, which is about 0.39% of the median home value. Your bill depends on your home's assessed value and local rates.
What income do you need to buy a home in St. Mary Parish?
For the median home with 20% down at 7.11%, the payment is about $851 a month. Keeping that under 28% of gross income takes about $36,451 a year.
More about St. Mary Parish
- Mortgage Refinance in St. Mary Parish
- Debt Relief in St. Mary Parish
- Home Equity Loans in St. Mary Parish
- Guides and quotes for mortgage refinance on our sister site, MortgageRefinance.com
Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates; Freddie Mac Primary Mortgage Market Survey, week of November 12, 2026. Estimates for small places have wide margins of error. About our data