443 Area Code

The 443 area code is a telephone area code in the state of Maryland, USA. Introduced in 1999 as an overlay, 443 serves the Baltimore metropolitan area and parts of the Eastern Shore, sharing its territory with area codes 410 and 667. This region is known for its historic neighborhoods, government centers, and cultural landmarks.

Understanding the 443 Area Code

The 443 area code supports landline phones, mobile phones, and VoIP services. As an overlay code, 10-digit dialing is mandatory for all local calls within the region.

443 Area Code Map and Location

The 443 area code map covers Baltimore City, surrounding Baltimore County, Annapolis, and portions of Maryland�s Eastern Shore, including Harford, Cecil, and Queen Anne�s counties.

Major Cities and Communities in the 443 Area Code

  • Baltimore - Largest city in Maryland, known for Inner Harbor and historic districts
  • Annapolis - State capital, home to the U.S. Naval Academy
  • Columbia - Planned community in Howard County
  • Bel Air - County seat of Harford County
  • Easton - Key city on Maryland�s Eastern Shore

ZIP Codes within the 443 Telephone Zone (Examples)

  • 21201 - Baltimore, MD
  • 21401 - Annapolis, MD
  • 21044 - Columbia, MD
  • 21014 - Bel Air, MD
  • 21601 - Easton, MD

Time Zone

The 443 area code is located in the Eastern Time Zone (ET), observing Eastern Standard Time (EST, UTC-5) in winter and Eastern Daylight Time (EDT, UTC-4) during daylight saving time.

Dialing, Phone & Service Details

  • Overlay: 443 overlays 410 and 667
  • Local dialing: 10-digit dialing required
  • Long-distance calls within the USA: Dial 1 + 443 + 7-digit number
  • International calls: Dial your country�s exit code + 1 + 443 + 7-digit number
  • Services: Landline, mobile, VoIP

What area code is 443? / Where�s area code 443?

What area code is 443? � The 443 area code is a Maryland telephone code overlaying 410 and 667, serving the Baltimore metropolitan area and parts of the Eastern Shore.

Where�s area code 443? � It is located in Maryland, USA, including Baltimore, Annapolis, Columbia, Bel Air, and Easton.

Frequently Asked Questions (FAQ) about 443 Area Code

What is the 443 area code?

443 overlays 410 and 667, covering the Baltimore metropolitan area and portions of Maryland�s Eastern Shore including Annapolis, Columbia, Bel Air, and Easton.

When was the 443 area code created?

The 443 area code was introduced in 1999 as an overlay for 410.

Where is area code 443 located?

It covers Baltimore City, Baltimore County, and portions of Maryland�s Eastern Shore.

What time zone is 443 in?

The 443 area code follows the Eastern Time Zone (EST/EDT).

Does 443 have an overlay?

Yes, 443 overlays 410 and 667, requiring 10-digit dialing.

What services does 443 support?

443 supports landline, mobile, and VoIP services throughout the overlay region.

443 Area Code