Area code 734

Area code 734 is a telephone area code in the North American Numbering Plan in southeast Michigan. It was created in 1997 in an area code split of 313. The numbering plan area comprises all of Washtenaw and Monroe counties, and southern and western portions of Wayne County. It includes Ann Arbor, Ypsilanti, Saline, Chelsea, Milan, Belleville, Garden City, Wayne, Westland, Livonia, Canton, Pinckney, Plymouth, Plymouth Township, Monroe, Petersburg, Bedford, Romulus, Huron Township and the remainder of Downriver south of a border formed by Goddard Road in Taylor and the northern borders of the cities of Southgate and Wyandotte. Area code 734 also serves the west side of the city of Inkster.
In October 2025, the North American Numbering Plan Administrator projected that the area code will exhaust in the first quarter of 2040.