The 248 area code serves Oakland County, Michigan, including Troy, Farmington Hills, Southfield, Royal Oak, Novi, Birmingham, Bloomfield Hills, and Rochester Hills, as well as small parts of Wayne County (Livonia and Northville). It sits in the Eastern Time Zone and has been in service since May 10, 1997, when it split off from area code 810. Since 2001, it has shared its numbering region with the overlay code 947.
What Is the 248 Area Code?
Area code 248 serves Oakland County, Michigan, one of the state’s most affluent and economically active counties, located just northwest of Detroit. As part of the North American Numbering Plan (NANP), area code primarily covers the northern suburbs of Metro Detroit. It supports residential, business, mobile, and VoIP telephone services.
Where Is the 248 Area Code Located?
The area code is 248 is centered on Oakland County, Michigan, with a small extension into Wayne County. Key cities and communities served include:
Neighboring area codes include 313 (Detroit), 734 (western Wayne County/Ann Arbor), 586 (Macomb County), and 810 (Genesee/Flint area, the code originally split from).
History: When Was the Area Code Created?
Location of area code 248 went into service on May 10, 1997, created as a geographic split from areas codes 810, which was running out of available phone numbers as Oakland County’s population and business activity grew rapidly through the 1990s. As the region’s growth continued to strain the numbering supply even after the split, regulators introduced area code 947 in 2000–2001 as an all-services overlay covering the same geographic area, rather than splitting the region again.
Why Businesses Choose a Area Code Number
Oakland County is one of Michigan’s strongest economic centers, home to major employers in automotive manufacturing, financial services, healthcare, and technology, including the Automation Alley tech and manufacturing corridor.
Time Zone
248 area code in michigan operates in the Eastern Time Zone (ET), specifically America/New_York, observing both Eastern Standard Time (EST, UTC-5) in winter and Eastern Daylight Time (EDT, UTC-4) during daylight saving time.
Is a Toll-Free or Legitimate Area Code?
248 is not a toll-free area code. It is a standard geographic area code assigned to a specific U.S. region (Oakland County, Michigan), unlike toll-free prefixes such as 800, 833, 844, 855, 866, 877, and 888.
How to Dial a Number
248 Area Code: Key Facts at a Glance
| Detail | Information |
|---|---|
| State | Michigan |
| Primary region | Oakland County (plus parts of Wayne County) |
| Major cities | Troy, Farmington Hills, Southfield, Royal Oak, Novi, Birmingham, Rochester Hills, Pontiac |
| Time zone | Eastern Time (EST/EDT) |
| In service since | May 10, 1997 |
| Split from | Area code 810 |
| Overlay code | 947 (added 2000–2001) |
| Toll-free? | No — standard geographic area code |
| Neighboring area codes | 313, 734, 586, 810 |
Frequently Asked Questions (FAQs)
Conclusion
The area code 248 location is more than just a set of digits; it’s the telephone identity of Oakland County, Michigan, one of the most economically vibrant and densely populated business regions in the state. From its origins as a 1997 split from area code 810 to its expansion through the 947 overlay, 248 has grown alongside the communities it serves, including Troy, Farmington Hills, Southfield, Royal Oak, and Birmingham.
