St. Martin Parish's estimated 2025 population is 50,673 with a growth rate of -0.38% in the past year according to the most recent United States census data. St. Martin Parish is the 20th largest parish in Louisiana. The 2010 population was 52,263 and has seen a growth of -3.04% since that time.
Data after 2023 is projected based on recent change
The racial composition of St. Martin Parish includes 64.83% White, 28.57% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 33,427 | 64.83% |
| Black or African American | 14,732 | 28.57% |
| Two or more races | 2,548 | 4.94% |
| Asian | 474 | 0.92% |
| Other race | 233 | 0.45% |
| Native American | 92 | 0.18% |
| Native Hawaiian or Pacific Islander | 53 | 0.1% |
Married
Widowed
Divorced
Separated
Never Married
St. Martin Parish's average per capita income is $44,036. Household income levels show a median of $53,394. The poverty rate stands at 16.56%.
Name | Median | Mean |
|---|---|---|
| Married Families | $92,747 | $109,766 |
| Families | $72,037 | $92,289 |
| Households | $53,394 | $74,226 |
| Non Families | $26,286 | $37,251 |
Average Income
Median Household Income
Poverty Rate