Jefferson Parish, Louisiana
Jefferson Parish: parish in Louisiana, United States
About
Jefferson Parish is a county located in the U.S. state of Louisiana. As of the 2010 census, the population was 432,552 and a population density of 260 people per km². After 10 years in 2020 county had an estimated population of 432,346 inhabitants. Its county seat is Gretna. The county was created 201 years ago in 1824.
County Snapshot
Jefferson Parish at a glance
Jefferson Parish currently has 17 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
17
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Louisiana counties
64
Open related pagesLargest city
Metairie TerracePopulation 142,489
Top linked places
Quick Facts about Jefferson Parish
| Population | 432,346 (2020) |
| Country | United States of America |
| State | Louisiana (United States) |
| Different from | Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County |
| Area | 1663 km2 |
| Water as percent of area | 56% |
| Land as percent of area | 44% |
| Latitude & Longitude | 29.6810,-90.0980 |
| Named for | Thomas Jefferson |
| Capital | Gretna |
| Establishment | January 01, 1825 |
| Time Zone | America/Chicago |
| Local time | 12:16:24 (13th April 2026) |
| Density | 260 Pop. per km² as of 2020 |
| Population growth | -0.05% (2010-2020) |
| Weather | 79℉ Mostly Sunny 7-days weather |
Geography
Jefferson Parish is located at 29°40'51"N 90°5'53"W (29.6809700, -90.0979800). It has 5 neighbors: Lafourche Parish, New Orleans, Plaquemines Parish, Saint Tammany Parish and Tangipahoa Parish.
Jefferson Parish map
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Jefferson Parish Populated Places (more)
Cities, towns, neighborhoods & other populated places in Jefferson Parish.
| City Name | Population | Title |
|---|---|---|
| Metairie Terrace | 142,489 | A census-designated place in Jefferson Parish, Louisiana. |
| Metairie | 138,481 | The most populous suburb of New Orleans, Louisiana. |
| Kenner | 66,288 | The most populous city in Jefferson Parish, Louisiana. |
| Marrero | 33,141 | CDP in Jefferson Parish, Louisiana |
| Terrytown | 23,319 | Unincorporated suburban community and census-designated place in Jefferson Parish, Louisiana, United States of America |
| Gretna | 17,615 | Suburb city of New Orleans |
| Estelle | 16,377 | Place in Jefferson Parish, Louisiana, United States |
| River Ridge | 13,494 | City in Louisiana, United States of America |
| Timberlane | 10,243 | City in Illinois, United States of America |
| Waggaman | 10,015 | City in Louisiana, United States of America |
| Harahan | 9,244 | City in Louisiana, United States of America |
| Westwego | 8,297 | City in Jefferson Parish, Louisiana, United States |
| Elmwood | 4,635 | City in Peoria County, Illinois, United States |
| Jean Lafitte | 1,996 | Human settlement in Louisiana, United States of America |
| Grand Isle | 1,447 | Town of the United States |
| Barataria | 1,109 | City in Louisiana, United States of America |
Weather
Mostly sunny, with a high near 79. Southeast wind 10 to 15 mph.
7-Day ForecastOfficial website of Jefferson Parish
Official Website- Gretna
Demographics
According to census records, the population of Jefferson Parish decreased by 0.05% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 432,552 | - | census |
| 2011 | 434,089 | 0.35% | estimation process |
| 2012 | 433,954 | -0.03% | estimation process |
| 2013 | 434,264 | 0.07% | estimation process |
| 2014 | 434,078 | -0.04% | estimation process |
| 2015 | 435,175 | 0.25% | estimation process |
| 2016 | 436,572 | 0.32% | estimation process |
| 2017 | 436,126 | -0.1% | estimation process |
| 2018 | 433,884 | -0.52% | estimation process |
| 2019 | 432,493 | -0.32% | estimation process |
| 2020 | 432,346 | -0.03% | estimation process |
Louisiana Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| East Baton Rouge Parish | 439,729 | Parish in Louisiana, United States |
| Orleans Parish | 389,476 | New Orleans consolidated city-parish in Louisiana, United States |
| New Orleans | 389,476 | The most populous city in Louisiana and the center of the New Orleans metropolitan area. |
| Saint Tammany Parish | 263,446 | Parish in Louisiana, United States of America |
| Lafayette Parish | 246,518 | Parish in Louisiana, United States |
| Caddo Parish | 237,479 | Parish in Louisiana, United States |
| Baton Rouge | 219,052 | The capital of Louisiana. |
| Calcasieu Parish | 203,310 | Parish in Louisiana, United States |
| Shreveport | 184,786 | The second most populous city in Louisiana. |
| Ouachita Parish | 152,439 | Parish in Louisiana, United States |
| Livingston Parish | 143,737 | Parish in Louisiana, United States |
| Metairie Terrace | 142,489 | A census-designated place in Jefferson Parish, Louisiana. |
| Metairie | 138,481 | The most populous suburb of New Orleans, Louisiana. |
| Tangipahoa Parish | 136,765 | Parish in Louisiana, United States |
| Ascension Parish | 128,665 | Parish in Louisiana, United States |
| Rapides Parish | 128,567 | Parish in Louisiana, United States |