Jefferson Parish, Louisiana

Jefferson Parish is a county in Louisiana with an estimated population of 421,777 in 2023. 6 cities, towns and Census places in it are indexed here.

Largest places in Jefferson Parish

About Jefferson Parish

Jefferson Parish is one of the counties of Louisiana. County governments in Louisiana handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.