St. James Parish's 2026 population is estimated at 18,894, reflecting a -0.57% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). St. James Parish is the 46th largest parish in Louisiana. The 2010 population was 22,051 and has grown -14.32% since 2010.
Data after 2023 is projected based on recent change
Overall: 40.8 years
Female: 41.6 years
Male: 40.5 years
There are 15,206 adults, (3,867 of whom are seniors) in St. James Parish.
Female: 10,252 (52.5%)
Male: 9,276 (47.5%)
The racial composition of St. James Parish includes 49.93% White, 47.43% Black or African American, and smaller percentages for Two or more races, Native American, other race, Native Hawaiian or Pacific Islander, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 9,750 | 49.93% |
| Black or African American | 9,263 | 47.43% |
| Two or more races | 410 | 2.1% |
| Native American | 69 | 0.35% |
| Other race | 16 | 0.08% |
| Native Hawaiian or Pacific Islander | 12 | 0.06% |
| Asian | 8 | 0.04% |
St. James Parish 's average per capita income is $55,156. Household income levels show a median of $65,531. The poverty rate stands at 11.09%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $118,949 | - |
| Families | $89,175 | $114,698 |
| Households | $65,531 | $95,062 |
| Non Families | $33,686 | $47,707 |
Average Income
Median Household Income
Poverty Rate