Avondale is a census-designated place in Jefferson Parish, Louisiana, United States, on the west bank of the Mississippi River. The population was 4,582 in 2020. It is part of the New Orleans–Metairie
Postcard photo of the Southern Pacific railroad barge Mastodon crossing the Mississippi River at Avondale, Louisiana. The railroad also had railroad ferries which worked in the San Francisco area for the same purpose.