Jefferson Chamber of Commerce Mayor Belinda Constant c/o City of Gretna Share: Government / Government Officials Mayor Belinda Constant c/o City of Gretna Visit Website 740 2nd St. Gretna, LA 70053 (504) 363-1505 (504) 363-1509 (fax) Map What's Nearby? Distance: 5 10 15 20 25 50 mi.