Geographic Regions and Area Codes

Area Code 248 is located in the state of Michigan, primarily covering Oakland County, a suburban region northwest of Detroit. It also extends to parts of Wayne and Genesee counties. The area code encompasses major cities such as Troy, Southfield, Farmington Hills, Rochester Hills, and Pontiac, along with numerous smaller towns and communities. The primary area code for this region is 248, which was first put into service on May 10, 1997, after being split from area code 810. To accommodate the growing demand for phone numbers, an overlay area code, 947, was introduced in 2002.

Key cities and their area codes:

  • Troy: 248
  • Southfield: 248
  • Farmington Hills: 248
  • Rochester Hills: 248
  • Pontiac: 248