The 734 area code is located in the state of Michigan, and according to Intelius data, covers roughly 778,533 phone numbers and 1,092,438 listings across 710 prefixes.
This is a General Purpose Code, in service since December 13, 1997.
Area code 734 is part of an overlay complex shared with:
Area code 734 was split from area code 313.
Local calls within area code 734 require 7 digits dialing, while long-distance calls require 1 plus 10 digits dialing.
Have you received a call from a number with a 734 area code? Figure out who is calling you by performing a reverse phone lookup search. Intelius can provide you with a phone report that includes (when available) original line type and carrier, the number owner’s name, last known address and past addresses, age, possible relatives, and more.
| County Population (2025) | 156,004 |
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| County Population (2025) | 370,214 |
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| County Population (2025) | 1,769,038 |
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