Median Age in Jefferson Parish, LA
ACS 2024 5-Year Estimates
40.0 years
Rank #2,117/3,222 · #27 in LA
34th
Jefferson 40.0 years
LA 38.0 years +5.3%
US 38.9 years +2.8%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Jefferson Parish's median age of 40.0 years compares to all 3,222 U.S. counties. Values range from 21.4 years to 86.2 years.
Distribution of Median Age Across All Counties
Ranking Context
Counties ranked closest to Jefferson Parish for median age.
Nearby Rankings
Full ranking →| #2,114 | Hancock County, IN | 40.0 years |
| #2,115 | Anderson County, KS | 40.0 years |
| #2,116 | De Soto Parish, LA | 40.0 years |
| #2,117 | Jefferson Parish, LA | 40.0 years |
| #2,118 | Hampden County, MA | 40.0 years |
| #2,119 | Mecosta County, MI | 40.0 years |
| #2,120 | Muskegon County, MI | 40.0 years |
About Median Age
Jefferson Parish, Louisiana has a median age of 40.0 years, ranking #2,117 of 3,222 counties nationwide — 2.8% above the national value of 38.9 years. Within Louisiana, it ranks #27 of 64. This places it in the 34th percentile nationally.
The median age of the total population. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.