Jefferson Parish is a district of Louisiana.
Boundaries: United States Census Bureau, MAF/TIGER Database (https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html) via geoBoundaries, public domain
Nothing has been written about Jefferson Parish here, and neither Wikipedia nor Wikivoyage has an article we could draw one from. If you know the place, that makes you a better source than anything we have. Tell us what is worth knowing and where you got it.
We show Gretna as the capital of Jefferson Parish. If that is wrong, tell us what it should be and where you read it.
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