Michigan · Eastern Time
734 Area Code
Area code 734 is in Michigan, serving western Wayne, Washtenaw and Monroe counties in southeast Michigan. It is in the Eastern Time zone.
Last updated October 1, 2026 · Source: NANPA
Where is the 734 area code?
734 is a Michigan area code covering western Wayne, Washtenaw and Monroe counties in southeast Michigan. In the wider directory it sits in the Midwest region.
Cities in the 734 area code
- Ann Arbor
- Livonia
- Westland
- Canton
- Taylor
- Ypsilanti
- Southgate
- Wyandotte
- Romulus
- Lincoln Park
- Monroe
- Plymouth
- Northville
- Belleville
Counties served by 734
Washtenaw County, Wayne County and Monroe County.
Time zone note: Eastern statewide except four Upper Peninsula counties near Wisconsin (Central).
Dialing 734
Ann Arbor, MI is currently served by the single area code 734, with no overlay. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
From outside the US, dial +1 734 followed by the seven-digit number.
History of the 734 area code
734 went into service on December 13, 1997, created when it was split from 313. It serves Ann Arbor and the surrounding part of Michigan. For how codes are created, split, and overlaid, see how area codes work.
Is 734 a scam or spam risk?
734 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 734 number on your screen is no guarantee the caller is in Ann Arbor, MI or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Michigan area codes
Explore more
See every code in Michigan, compare codes across the Midwest region, or view all Eastern Time codes. You can also browse the 7XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
734 area code FAQ
Where is the 734 area code?
The 734 area code is in Michigan, covering western Wayne, Washtenaw and Monroe counties in southeast Michigan, in the Midwest region.
What cities are in the 734 area code?
Cities in the 734 area code include Ann Arbor, Livonia, Westland, Canton, Taylor, Ypsilanti, Southgate, Wyandotte, Romulus and Lincoln Park.
What time zone is 734 in?
734 is in the Eastern Time zone. Eastern statewide except four Upper Peninsula counties near Wisconsin (Central).
When did the 734 area code start?
734 went into service on December 13, 1997.
Do I have to dial 10 digits for 734?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 734 a toll-free or premium code?
No. 734 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.