Jefferson Parish
URL: https://knowledge.ivjn.us/en/places/la-jefferson-county.html

Jefferson Parish is a county in Louisiana, United States, with county seat Gretna.

## Administrative divisions

Jefferson Parish is a county in Louisiana, United States; the county seat is Gretna[^uscb2023].

## Basic facts

- State: [Louisiana](https://knowledge.ivjn.us/en/places/louisiana.html)
- County seat: Gretna[^uscb2023]
- Division level: county[^uscb2023]

## Parent division

Located in [Louisiana](https://knowledge.ivjn.us/en/places/louisiana.html).

Updated: 2026-10-29

Relations:
- Located in: Louisiana https://knowledge.ivjn.us/en/places/louisiana.html

Mentioned in:
- Louisiana https://knowledge.ivjn.us/en/places/louisiana.html

Sources:
- Jefferson Parish (Wikipedia) https://en.wikipedia.org/wiki/Jefferson_Parish
- U.S. Census Bureau 2023 FIPS state and county codes https://www.census.gov/library/reference/code-lists/ansi.html