Jefferson Parish, Louisiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 2nd-largest in Louisiana
The population of Jefferson Parish, Louisiana is 432,484 as of the 2023 American Community Survey, making it the 2nd-largest county in Louisiana. The median household income is $65,246, the median home value is $243,500, and the median age is 39.9.
The population of Jefferson Parish has declined 1.2% since 2010 (432,618 → 427,253), a -0.09% annualized rate.
432,484
Population
-0.09%
Annual growth
1437
People / sq mi
$65,246
Median Income
$243,500
Median Home Value
Jefferson Parish covers 301 sq mi of land at 1437.5 people per square mile.
About Jefferson Parish, LA
What distinguishes Jefferson Parish is density: among the most densely settled of US counties, around 1,437 people per square mile. With 432,484 residents, Jefferson Parish is a county in Louisiana. It is the #2-largest of all counties in Louisiana nationally.
The typical household here earns about $65,246, below the US median of $78,538. Poverty sits at 12.8%, close to the national 12.4%. The median home value is $243,500, with typical rent around $1,162.
About 29.9% of adults 25 and older have a bachelor’s degree, below the 35.0% national figure. About 7.4% of the workforce is home-based, below the national 14.0%, and the average commute runs about 24 minutes each way.
That density explains much of the rest of the profile in Jefferson Parish: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Jefferson Parish Population History (2010-2024)
The county of Jefferson Parish had a population of 432,618 in 2010 and 427,253 in 2024, a -1.2% growth over 14 years. The peak was 439,747 in 2020. Average annual growth rate: -0.09%.
427,253
Population (2024)
432,618
Population (2010)
439,747
Peak (2020)
-0.09%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 432,618 |
| 2011 | 434,133 |
| 2012 | 434,049 |
| 2013 | 434,394 |
| 2014 | 434,235 |
| 2015 | 435,358 |
| 2016 | 436,865 |
| 2017 | 436,571 |
| 2018 | 434,637 |
| 2019 | 434,096 |
| 2020 | 439,747 |
| 2021 | 434,206 |
| 2022 | 427,739 |
| 2023 | 425,657 |
| 2024 | 427,253 |
Race & Ethnicity
| White | 52.7% |
| Black or African American | 26.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.2% |
| Two or More Races | 0.0% |
Age & Sex
39.9
Median Age
51.4%
Female
48.6%
Male
18.1%
Age 65+
Age Distribution
Children (under 15): 18.7% · Seniors (65+): 18.1%
Income & Poverty
| Median household income | $65,246+$5,223 vs state |
| Mean household income | $91,025 |
| Per-capita income | $37,062 |
| Poverty rate | 12.8%-1.4% vs state |
| Unemployment rate | 3.7% |
| Employment-to-population | 59.3% |
Top Industries by Employment
The largest employment sector in Jefferson Parish is professional & business services, accounting for 22.7% of workers.
How residents commute
0.9%
Drive alone
1.7%
Carpool
77.3%
Public transit
7.4%
Work from home
24.3 min
Avg commute
Housing
$243,500+$34,800 vs state
Median home value
$1,162
Median rent
62.3%
Homeownership rate
194,109
Total housing units
91.2%
Occupied
8.8%
Vacant
37.7%
Renter-occupied
Social & access
89.1%
With health insurance
93.5%
With broadband internet
14.7%
Foreign-born
5.6%
Veterans (18+)
16.1%
With a disability
79.5%
Speak language other than English at home
Education
86.6%
High School+
29.9%
Bachelor's+
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Common questions about Jefferson Parish, LA
Frequently Asked Questions
Jefferson Parish, Louisiana has a population of 432,484 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 2nd-largest county in Louisiana. Population density is 1437 people per square mile.
The population of Jefferson Parish has declined 1.2% since 2010 (432,618 → 427,253), a -0.09% annualized rate.
The median household income in Jefferson Parish, Louisiana is $65,246, with mean (average) household income of $91,025 and per-capita income of $37,062. 12.8% of residents live below the federal poverty level.
In Jefferson Parish, the largest racial and ethnic groups are White (52.7%), Black or African American (26.0%), Hispanic or Latino (2.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Jefferson Parish, Louisiana is 39.9 years. Residents are 51.4% female and 48.6% male.
The median home value in Jefferson Parish is $243,500 and median monthly rent is $1,162. 62.3% of occupied housing units are owner-occupied. The county has 194,109 total housing units, 8.8% of which are vacant.
The largest employment sector in Jefferson Parish, Louisiana is professional, scientific, and management services, employing 22.7% of workers. The unemployment rate is 3.7%.
New Orleans is among the largest cities associated with Jefferson Parish, Louisiana, with a population of 376,035.
Jefferson Parish, LA Climate
Jefferson Parish, LA has an average annual temperature of 20.6°C (69°F) and receives about 1568 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
20.6°C
Avg Temp
1568
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 12° / 54° | 125 mm |
| February | 13° / 56° | 132 mm |
| March | 17° / 62° | 123 mm |
| April | 20° / 68° | 105 mm |
| May | 24° / 75° | 129 mm |
| June | 27° / 80° | 132 mm |
| July | 28° / 82° | 177 mm |
| August | 28° / 82° | 172 mm |
| September | 26° / 79° | 154 mm |
| October | 22° / 71° | 85 mm |
| November | 17° / 63° | 109 mm |
| December | 14° / 57° | 125 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Jefferson Parish, LA
The most comfortable months to visit Jefferson Parish, LA are typically October, April and May, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near 8°C low). July is usually the wettest month.
Where to stay near Jefferson Parish
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.