I don’t see many movies but I’m glad to see movies set somewhere else then the usual CA or NY. I however cannot recall any movie set even partly in LA since ‘Easy Rider’ or perhaps some strange Mickey Rourke movie.
Sure enough, there's a wikipedia page on this. It lists 79 films set in Louisiana, plus another 101 specifically set in New Orleans. IIRC, the Rourke film was Angel Heart. You're right, it was pretty weird.
You mean you never saw the grungey little potboiler “Louisiana Hussy” (1959), about two Cajun brothers fighting over some hot blonde that shows up on the bayou? Shot on location in Louisiana bayou country.
Betty Lynn (Thelma Lou from the Andy Griffith Show) had a supporting role in it.