Area code 586 serves Macomb County in southeastern Michigan, including cities such as Warren, Sterling Heights, and Roseville. Created in 2001 from a split with area code 810, 586 supports a densely populated and industrially significant region just north of Detroit. Warren is home to major automotive operations, including the General Motors Technical Center and several defense contractors. The area also features strong retail, healthcare, and logistics sectors. With its proximity to Detroit, 586 maintains ties to the larger metro economy while offering suburban residential communities with good schools and infrastructure. The presence of Macomb Community College and medical institutions supports both workforce development and regional stability. A 586 number signals local presence in a key manufacturing and middle-class residential zone, appealing to businesses serving the greater Detroit area or rooted in the automotive supply chain.