St. Mary Parish property tax
Homeowners in St. Mary Parish, Louisiana typically pay about 0.39% of their home's value in property tax each year — a median bill of $545 on a median home value of $138,900.
Typical effective rate
0.39%
higher than 94% of U.S. counties
Median tax paid
$545
per year
Median home value
$138,900
In LA
#37
of 64 ranked counties
At a glance
- Effective rate 0.39% — 58% lower than the U.S. median of 0.94%, and 28% lower than the Louisiana median of 0.55%.
- With vs. without a mortgage — median tax $658 for mortgaged homes, $447 for homes owned outright.
- State ranking — 37th highest effective rate of 64 ranked Louisiana counties; nationally it sits around the 6th percentile.
Estimate a bill for St. Mary Parish
Apply this county's typical effective rate (0.39%) to a home value of your choice.
Frequently asked questions
What is the property tax rate in St. Mary Parish, LA?
The typical effective property-tax rate in St. Mary Parish is 0.39% of a home's value per year, based on median taxes paid ($545) divided by the median home value ($138,900) in the Census ACS 2020–2024 5-year estimates. This is a typical burden for comparison, not a statutory mill rate.
How much is property tax on a typical home in St. Mary Parish?
The median owner-occupied home in St. Mary Parish is valued at $138,900, and the median real estate tax paid is $545 per year. Homes with a mortgage have a median tax of $658, versus $447 for homes without one.
How does St. Mary Parish compare to the rest of Louisiana?
St. Mary Parish's effective rate is 28% lower than the Louisiana median, ranking 37th of 64 ranked counties in the state.
Compare nearby Louisiana counties
Counties ranked closest to St. Mary Parish by in-state effective rate. Open the comparison tool or see all Louisiana counties.
| In-state | County | Effective rate | Median tax |
|---|---|---|---|
| 34 | Red River Parish | 0.42% | $506 |
| 35 | Tangipahoa Parish | 0.41% | $882 |
| 36 | Sabine Parish | 0.39% | $484 |
| 38 | Concordia Parish | 0.37% | $384 |
| 39 | Assumption Parish | 0.37% | $552 |
| 40 | Vermilion Parish | 0.36% | $589 |
Official data & resources for St. Mary Parish
- St. Mary Parish Census profile (data.census.gov) — housing, value and tax figures for this county.
- Table B25103 for St. Mary Parish — median real estate taxes paid (the source for the tax figures above).
- Table B25077 for St. Mary Parish — median home value.
- Federal forms & is property tax deductible? — IRS Pub 530, Schedule A and the SALT cap, plus your state tax agency.
Finding your exact bill
Your county or municipal assessor (sometimes called the appraisal district, property appraiser, or tax collector) sets the assessed value and the exact millage that produces your bill. Search for "[county name] [state] assessor" or "property tax" on an official .gov site.
Figures on this page are Census survey medians for the whole county (2020–2024 5-year), not an assessment of any individual property. Rates, exemptions and assessment practices vary by municipality and school district within a county.