Jefferson Parish is a parish in the U.S. state of Louisiana. The parish seat is Gretna. Jefferson Parish is included in the Greater New Orleans area.Jefferson Parish, Louisiana is bordered byLafourche Parish, Louisiana,Plaquemines Parish, Louisiana,Orleans Parish, Louisiana,St. Tammany Parish, Louisiana,St. Charles Parish, Louisiana,Tangipahoa Parish, Louisiana, and St. John the Baptist Parish, Louisiana


History
1825 to 1940

Barataria Bay Lighthouse, c. 1903
Jefferson Parish was named in honor of U.S. President Thomas Jefferson of Virginia when the parish was established by the Louisiana Legislature on February 11, 1825,[3] a year before Jefferson died. A bronze statue of Jefferson stands at the entrance of the General Government Complex on Derbigny Street in Gretna. The parish seat was in the city of Lafayette, until that area was annexed by New Orleans in 1852. In that year the parish government moved to Carrollton, where it remained for twenty-two years.[4]

Originally, this parish was larger than it is today, running from Felicity Street in New Orleans to the St. Charles Parish line. However, as New Orleans grew, it absorbed the cities of Lafayette, Jefferson City, Carrollton, and several unincorporated areas (faubourgs). These became part of Orleans Parish. The present borders between Jefferson Parish and Orleans Parish were set in 1874. The Jefferson Parish seat was moved to Gretna at the same time.[5] (The historic city of Lafayette in Jefferson Parish, as it was recorded in U.S. census records until 1870, should not be confused with Lafayette, Louisiana, in Lafayette Parish.)

1940 to 2000
From the 1940s to the 1970s, Jefferson's population swelled with an influx of middle-class white families from Orleans Parish. The parish's population doubled in size from 1940 to 1950 and again from 1950 to 1960 as the parents behind the post–World War II baby boom, profiting from rising living standards and dissatisfied with their old neighborhoods, chose relocation to new neighborhoods of detached single-family housing. By the 1960s, rising racial tensions in New Orleans complicated the impetus behind the migration, as many new arrivals sought not only more living space but also residence in a political jurisdiction independent from New Orleans proper.

The earliest postwar subdivisions were developed on the Eastbank of Jefferson Parish ("East Jefferson") along the pre-existing Jefferson Highway and Airline Highway routes, often relatively far-removed from the New Orleans city line, as land prices were lower further away from New Orleans and land assembly was easier. The completion of Veterans Highway in the late 1950s, following a route parallel to Airline but further north, stimulated more development. The arrival of I-10 in the early 1960s resulted in the demolition of some homes in the Old Metairie neighborhood, where development began in the 1920s, but resulted in even easier access to suburban East Jefferson.

In the portion of Jefferson Parish on the Westbank of the Mississippi River ("West Jefferson"), large-scale suburban development commenced with the completion, in 1958, of the Greater New Orleans Bridge crossing the Mississippi River at downtown New Orleans. Terrytown, within the city limits of Gretna, was the first large subdivision to be developed. Subsequent development has been extensive, taking place within Harvey, Marrero, Westwego and Avondale.

Similar to the development trajectory observed by other U.S. suburban areas, Jefferson began to enjoy a significant employment base by the 1970s and 1980s, shedding its earlier role as a simple bedroom community. In East Jefferson, the Causeway Boulevard corridor grew into a commercial office node, while the Elmwood neighborhood developed as a center for light manufacturing and distribution. By the mid-1990s, Jefferson Parish was exhibiting some of the symptoms presented by inner-ring suburbs throughout the United States. Median household income growth slowed, even trailing income growth rates in New Orleans proper, such that the inner city began to narrow the gap in median household income, a gap at its widest at the time of the 1980 census. St. Tammany Parish and, to a lesser extent, St. Charles Parish began to attract migrants from New Orleans, and increasingly even from Jefferson Parish itself. These trends were catalyzed by Hurricane Katrina, which destroyed much of New Orleans' low-income housing and propelled further numbers of lower-income individuals into Jefferson Parish.

Despite these challenges, Jefferson Parish still contains the largest number of middle class residents in metropolitan New Orleans and acts as the retail hub for the entire metro area