734 area code
Ann Arbor area, Eastern Time.Area code 734 covers Ann Arbor, Livonia, Wayne and 30 more places in Michigan, on Eastern Time. 679 covers it too, along with neighboring codes' areas.
Right now in Ann Arbor
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer)
Calling hours: Every day, 9 AM to 9 PM (Michigan law)
Small talk
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Where 734 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 734 has 33. Each one's share is how many 734 numbers start there. Its biggest metro area is Detroit-Warren-Dearborn, MI.
- Ann Arbor19%
- Livonia9%
- Wayne9%
- Ypsilanti7%
- Plymouth6%
- Monroe6%
- Wyandotte6%
- Trenton4%
- Romulus3%
- Belleville2%
- Dexter2%
- Flat Rock2%
Also: New Boston, Ida, Maybee, Whitmore Lake, Chelsea, Dundee, Erie, Pinckney, Temperance, Willis, Carleton, Saline + 9 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 734 number?
Sales calls to homes and cell phones have legal hours, set by Michigan law. Hold every 734 number to them, since you can't tell a work line from a personal cell.
What applies to 734Every day, 9 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Michigan lawEvery day, 9 AM to 9 PMIn a harassment statute that needs intent to annoy.MCL 750.540e(1)(f) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 734 area code
734 went into service on December 13, 1997, split off from 313. 679 covers 734's area too, along with neighboring codes' areas. Local calls can still be dialed with 7 digits.
- 1997734 starts
- 2025679 overlay
Source: NANPA area code database
Calling a list of 734 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
734 area code FAQ
What area code is 734?
734 is a Michigan area code for Ann Arbor, Livonia, Wayne, Ypsilanti and 29 more places.
What time zone is the 734 area code in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer).
What are the calling hours for 734 numbers?
Every day, 9 AM to 9 PM, local time, under Michigan law.
When did the 734 area code start?
On December 13, 1997. It was split from 313.
Calling 734 numbers? Reach more of them.
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