Louisiana · FIPS 22101 · ACS 2020–2024
St. Mary Parish, Louisiana property tax rate
Homeowners in St. Mary Parish paid a median of $545 a year in real estate taxes on a median home value of $138,900 (2020–2024 survey). Taxes came to 0.38% of home value, 31% below the Louisiana rate of 0.55% and 60% below the U.S. rate of 0.94%.
- 0.38%Effective tax rate±0.06% margin · Louisiana: 0.55%
- $545Median tax per yearLouisiana: $1,180 · U.S.: $3,119
- $138,900Median home valueLouisiana: $216,500
- 12,673Owner-occupied homes69% of households own
| Measure | St. Mary Parish | Louisiana | U.S. | St. Mary Parish 2019–2023 | Change |
|---|---|---|---|---|---|
| Effective tax rate | 0.38% | 0.55% | 0.94% | 0.40% | −0.02 pts |
| Median tax, all owners | $545 | $1,180 | $3,119 | $515 | +$30 (+5.8%) |
| Median tax, with a mortgage | $658 | $1,455 | $3,489 | $614 | +$44 (+7.2%) |
| Median tax, no mortgage | $447 | $750 | $2,576 | $395 | +$52 (+13.2%) |
| Median home value | $138,900 | $216,500 | $332,700 | $128,000 | +$10,900 (+8.5%) |
| Total taxes paid | $8,241,200 | $1,752,701,300 | $360,573,527,500 | $8,619,900 |
How St. Mary Parish compares
- Per $1,000 of home value, owners here paid about $3.78 a year, against $5.46 statewide and $9.40 nationally.
- Rank in Louisiana: 25 of 49 parishes from lowest to highest effective rate (among those with reliable estimates). Nationally, 6% of 2,682 counties had a lower rate.
- Homes with a mortgage: 0.41% of value; homes without one: 0.35%. Median bills: $658 and $447.
- Compared with the 2019–2023 survey, the effective rate fell (−0.02 pts) and the median tax changed +$30 (+5.8%). The two 5-year surveys share four years of responses, so year-to-year moves are small and partly noise.
- Margin of error: the effective rate is 0.38% ± 0.06% at 90% confidence, from a sample of the 12,673 owner-occupied homes.
Louisiana parishes with similar rates
| Parish | Effective rate | Median tax | Median value |
|---|---|---|---|
| Tangipahoa Parish | 0.34% | $882 | $212,900 |
| St. Martin Parish | 0.35% | $725 | $164,200 |
| Iberville Parish | 0.35% | $556 | $172,800 |
| Acadia Parish | 0.36% | $483 | $155,500 |
| Iberia Parish | 0.36% | $593 | $164,500 |
| Assumption Parish | 0.37% | $552 | $150,300 |
| Terrebonne Parish | 0.40% | $836 | $187,200 |
| Natchitoches Parish | 0.40% | $755 | $171,300 |
Sources
- U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table-based summary file: B25090 (aggregate real estate taxes), B25082 (aggregate home value), B25103 (median real estate taxes), B25077 (median home value) and B25003 (tenure); files dated January 29, 2026.
- U.S. Census Bureau, American Community Survey 2019–2023 5-year estimates, same tables (files dated October 31, 2024), for the comparison column.
- Geography names: Census Bureau Geos20245YR.txt (file dated January 22, 2026).
Effective rate = total real estate taxes paid by owner-occupied homes ÷ their total value, as reported by owners to the Census Bureau. It is not a millage rate. Your bill depends on your assessed value, exemptions (such as homestead) and local levies.