Ann Arbor, Michigan

Where Is Area Code 734?

Area code 734 is in southeastern Michigan. It serves Ann Arbor and nearby communities west and south of Detroit. It is part of the North American Numbering Plan and covers landline and mobile numbers in this part of the state.

Area code 734 covers all of Washtenaw County and Monroe County. It also serves parts of Wayne County. Major cities and communities in the 734 area include Ann Arbor, Ypsilanti, Monroe, Taylor, Romulus, Canton, Belleville, Plymouth, Livonia, and Dearborn Heights.

Area code 734 includes well-known places in the Ann Arbor region and along Lake Erie. The University of Michigan is in Ann Arbor and is one of the area’s most notable institutions. Detroit Metropolitan Wayne County Airport is in Romulus, and the city of Monroe sits near the western shore of Lake Erie.

History of Area Code 734

Area code 734 was created on November 3, 1997. It was split from area code 313 as demand for new telephone numbers grew in southeastern Michigan. The split gave Ann Arbor, Monroe, and many western and southern Wayne County communities a separate area code from Detroit.

Area code 734 later received an overlay. Area code 278 was approved as an overlay for 734, and 10-digit dialing became necessary across the region before the new code was activated. This change reflected continued growth in wireless phones, fax lines, and other services that needed new numbers.

Key Facts About Area Code 734

• Area code 734 is in Michigan, and Ann Arbor is one of its best-known cities.
• Area code 734 is in the Eastern Time Zone.
• Area code 734 was created on November 3, 1997, in a split from area code 313.
• Area code 734 serves all of Washtenaw County and Monroe County, plus parts of Wayne County.
• Area code 734 is a split area code, not one of Michigan’s original 1947 area codes.
• The University of Michigan in Ann Arbor is one of the most notable institutions in the 734 region.
• Detroit Metropolitan Wayne County Airport in Romulus is within the 734 service area.
• The 2020 United States Census counted 123,851 people in Ann Arbor, the area code’s major city.

Frequently Asked Questions

What state is area code 734 in?

Area code 734 is in Michigan.

What major cities use area code 734?

Major cities and communities in area code 734 include Ann Arbor, Ypsilanti, Monroe, Taylor, Romulus, Canton, Belleville, Plymouth, Livonia, and Dearborn Heights.

Is area code 734 a toll-free number?

No. Area code 734 is a geographic area code.