How many people live in Jefferson Parish, LA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 427,300 people living in Jefferson Parish, LA. That makes Jefferson Parish the second-most populous parish in Louisiana. It is home to 9.3% of people living in the state.
427K
population of Jefferson Parish, LA (2024)
9.3%
County share of the Louisiana population (2024)
About 427,300 people lived in Jefferson Parish, LA in 2024.
Population estimates, 2000–2024
What are Jefferson Parish, LA’s age demographics?
About 83,900 Jefferson Parish residents are aged 65 and older in 2024. That represents 19.6% of its population. For comparison, the age group represents 17.8% of Louisiana’s population and 18% in the US overall.
Another 95,100 Jefferson Parish residents, or 22.3% of the population, were children under 18. For comparison, the age group represents 23.3% of Louisiana’s population and 21.6% in the US overall.
A lower share of Jefferson Parish, LA's population is aged 18–24 than the US as a whole.
Population estimates by age group, (2024)
What are Jefferson Parish, LA’s racial and ethnic demographics?
Non-Hispanic Black or African American residents make up 26.2% of the Jefferson Parish, LA population, higher than the national share of 12.6%. Jefferson Parish, LA also has a larger share of people identifying as Hispanic (20.3%) than the US overall (20%).
In contrast, Jefferson Parish’s non-Hispanic white population accounts for 47%, below the 57.5% nationwide, and the non-Hispanic Asian population makes up 4.6% of the parish, compared with 6.5% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Jefferson Parish, LA has a higher share of a Hispanic population than Louisiana as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Jefferson Parish, LA is Kenner with about 64,700 residents in 2024.
Cities and towns in Jefferson Parish, LA ranked by population
Population (2024), includes only portions within parish
| City or town | Population | |
|---|---|---|
| 1. | Kenner | 64,650 |
| 2. | Gretna | 17,185 |
| 3. | Harahan | 8,819 |
| 4. | Westwego | 8,231 |
| 5. | Jean Lafitte | 1,815 |
| 6. | Grand Isle | 991 |
| 7. | Balance of Jefferson Parish | 325,562 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
