AT&T Inc. is the dominant telephone company in Macomb County and Michigan with approximately 64.2 percent of the marketplace, followed by Verizon with 11.5 percent.
In keeping with national trends, wireless penetration has been climbing in the Detroit Region in recent years. A 2003 study by Scarborough Research indicates that 74 percent of Detroit households rely on cellular phone service. This ranks the city second nationally in cell phone penetration, with Atlanta claiming 75 percent.
All Macomb County businesses have access to T1 or higher broadband internet connections. Residential high-speed access is available throughout most of the county through cable modems and DSL.
Cable television in Macomb County is provided by Comcast and WideOpenWest.