Jefferson Parish, Louisiana
Located in Louisiana, Jefferson Parish has a population of 430,920 residents and a median age of 40.0 years, making it the #168 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 16.6%. The median home value is $251,400, and the median household income is $65,252, which is 13% below the national median.
Demographics
Jefferson Parish has a population of 430,920, making it the #168 most populous county in the US. The median age is 40.0 years, which is 2.8% 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 Jefferson Parish is $65,252, ranking #1,615 out of 3,222 counties — 13.2% below the national median. The poverty rate is 16.6% and unemployment stands at 6.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Jefferson Parish is $251,400 (-10.8% vs national). Renters pay a median of $1,190/mo and the homeownership rate is 62.6%.
Median Home Value Trend
Rankings →Household Type
Education
In Jefferson Parish, 30.5% of adults age 25+ hold a bachelor's degree or higher, which is 9.4% below the national average, ranking #730 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Jefferson Parish is 75.2 years. 20.6% of adults report poor or fair health and 10.9% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
17.3% of adults in Jefferson Parish smoke , 39.7% are obese , and 21.9% report excessive drinking. The drug overdose death rate is 66.0 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Jefferson Parish is 15.4 per 100,000 and the suicide rate is 14.2 per 100,000. Motor vehicle deaths occur at a rate of 9.5 per 100,000.
Homicide Rate Trend
Families & Children
23.2% of children in Jefferson Parish live in poverty and the infant mortality rate is 6.0 per 1,000 live births. The teen birth rate is 24.8 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Jefferson Parish is 62.5%. The mean commute time is 26.8 min, which is 2.9% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Jefferson Parish voted Republican with a margin of 12.9%. The vote was 42.5% Dem / 55.4% Rep. Compared to 2020, the margin shifted 1.8 toward Republicans .
Vote Share Over Time
About Jefferson Parish, Louisiana
Jefferson Parish, Louisiana has a total population of 430,920, making it the 168th most populous county in the United States. The median age in Jefferson Parish is 40.0 years, which is 2.8% above the national median of 38.9 years.
The median household income in Jefferson Parish is $65,252, which ranks #1,615 of 3,222 counties nationwide. This is 13.2% below the national median of $75,149. The poverty rate is 16.6%, higher than the national rate of 12.6%. The unemployment rate stands at 6.1%.
The median home value in Jefferson Parish is $251,400, 10.8% below the national median. Renters in Jefferson Parish pay a median gross rent of $1,190 per month. The homeownership rate is 62.6%, compared to the national rate of 64.4%.
In Jefferson Parish, 30.5% of residents aged 25 and older hold a bachelor's degree or higher, 9.4% below the national average of 33.7%. Health insurance coverage stands at 88.6% of the population. The average commute time for workers is 26.8 min.
Jefferson Parish is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 47.2% of the population, followed by Black (non-Hispanic) (25.1%) and Hispanic or Latino (18.9%).
All data for Jefferson 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.