St. John the Baptist Parish, Louisiana
Located in Louisiana, St. John the Baptist Parish has a population of 40,743 residents and a median age of 40.1 years, making it the #1,194 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 14.4%. The median home value is $193,200, and the median household income is $66,630, which is 11% below the national median.
Demographics
St. John the Baptist Parish has a population of 40,743, making it the #1,194 most populous county in the US. The median age is 40.1 years, which is 3.1% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in St. John the Baptist Parish is $66,630, ranking #1,458 out of 3,222 counties — 11.3% below the national median. The poverty rate is 14.4% and unemployment stands at 10.8%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in St. John the Baptist Parish is $193,200 (-31.5% vs national). Renters pay a median of $1,334/mo and the homeownership rate is 77.5%.
Median Home Value Trend
Rankings →Household Type
Education
In St. John the Baptist Parish, 18.2% of adults age 25+ hold a bachelor's degree or higher, which is 46.1% below the national average, ranking #2,328 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in St. John the Baptist Parish is 73.6 years. 23.8% of adults report poor or fair health and 6.9% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
19.9% of adults in St. John the Baptist Parish smoke , 43.8% are obese , and 17.9% report excessive drinking. The drug overdose death rate is 31.3 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in St. John the Baptist Parish is 20.5 per 100,000 and the suicide rate is 9.3 per 100,000. Motor vehicle deaths occur at a rate of 19.5 per 100,000.
Homicide Rate Trend
Families & Children
27.9% of children in St. John the Baptist Parish live in poverty and the infant mortality rate is 8.3 per 1,000 live births. The teen birth rate is 21.8 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in St. John the Baptist Parish is 67.4%. The mean commute time is 32.5 min, which is 17.6% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, St. John the Baptist Parish voted Democratic with a margin of 29.2%. The vote was 64% Dem / 34.8% Rep. Compared to 2020, the margin shifted +1.0 toward Democrats .
Vote Share Over Time
About St. John the Baptist Parish, Louisiana
St. John the Baptist Parish, Louisiana has a total population of 40,743, making it the 1,194th most populous county in the United States. The median age in St. John the Baptist Parish is 40.1 years, which is 3.1% above the national median of 38.9 years.
The median household income in St. John the Baptist Parish is $66,630, which ranks #1,458 of 3,222 counties nationwide. This is 11.3% below the national median of $75,149. The poverty rate is 14.4%, higher than the national rate of 12.6%. The unemployment rate stands at 10.8%.
The median home value in St. John the Baptist Parish is $193,200, 31.5% below the national median. Renters in St. John the Baptist Parish pay a median gross rent of $1,334 per month. The homeownership rate is 77.5%, compared to the national rate of 64.4%.
In St. John the Baptist Parish, 18.2% of residents aged 25 and older hold a bachelor's degree or higher, 46.1% below the national average of 33.7%. Health insurance coverage stands at 93.3% of the population. The average commute time for workers is 32.5 min.
St. John the Baptist Parish is a diverse community. The largest racial or ethnic group is Black (non-Hispanic) at 56.8% of the population, followed by White (non-Hispanic) (29.5%) and Hispanic or Latino (8.9%).
All data for St. John the Baptist Parish, Louisiana comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.