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Michigan, located in the Great Lakes region of the United States, is served by several area codes that facilitate telecommunications across its diverse urban and rural landscapes. The state initially adopted the 313 area code in 1947, which primarily covered Detroit and its surrounding areas. Over the following decades, as the state’s population grew and new regions developed, additional area codes were introduced.

As of 2023, Michigan utilizes multiple area codes, including 248, 586, 734, 810, 517, 989, and 906, reflecting its demographic distribution and geographic needs. The 248 area code, for example, serves suburbs in Oakland County, while 906 covers the Upper Peninsula, highlighting the unique regional characteristics across the state. In total, Michigan has a population of approximately 10 million people, making it one of the most populous states in the U.S.

Michigan's area codes also reflect significant changes in technology and telecommunications. The introduction of 10-digit dialing in many areas has been essential as the demand for phone numbers has increased, exacerbated by the proliferation of mobile devices. The state's area codes are not only functional; they also signify regional identities and community connections. In addition, Michigan has undergone several adjustments to its area code boundaries in response to population shifts and market demands, underscoring the dynamic nature of telecommunications in an evolving technological landscape.