Mandeville, LA is currently using one area code which is area code 985. Area code 985 was created from a split of area code 504 and put into service on February 12, 2001.
In addition to Mandeville, LA area code 985 serves southeastern Louisiana including the larger cities and communities of Hammond, Houma, LaPlace, Morgan City, Slidell and Thibodaux in addition to many smaller communities within the service area.
Mandeville, LA is located in Saint Tammany Parish and observes the Central Time Zone.
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