What is 443 Area Code?

The 443 area code is a key telephone code in Maryland, introduced in 1997 as an overlay to area code 410. It supports both residential and business communications, providing flexibility and a professional local presence.

  • State: Maryland
  • Major Cities: Baltimore, Annapolis, Towson, Columbia, Glen Burnie
  • Time Zone: Eastern Time Zone (ET)
  • Established: 1997
  • Overlay Area Code: 410, 667
  • Region Population: Approximately 4.3 million residents
  • Primary Uses: Landlines, mobile phones, VoIP services, and business communication solutions

Population & Demographics of 443 Area Code

The 443 area code region is densely populated with over 4.3 million residents, featuring urban centers like Baltimore and Annapolis alongside growing suburban communities. Baltimore, as the economic and cultural hub, contributes heavily to the region’s business and residential activity.

The population in the 443 area code is diverse, with a mix of students, professionals, families, and retirees. This demographic diversity supports a variety of industries, including finance, healthcare, technology, and logistics.

443 Area Code Time Zone

The 443 area code operates in the Eastern Time Zone (ET), aligning business hours with major financial and commercial centers along the East Coast. This ensures smooth communication for regional and national businesses.