What area code is 410?
Here's everything about it.
Instant lookup for the 410 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
410 at a glance
Summary
Cities & regions served by 410
Baltimore4 communities on record for 410.
Where 410 sits on the map
Overlay: 443, 667Coverage area
About the 410 region
410 covers Baltimore in Maryland, including Annapolis, Columbia and Atlantic Ocean. The code has been in service since 1991.
As the Baltimore region grew, 410 ran low on available numbers, so 443 and 667 were added as overlay codes over the same geographic area. Both codes are local to each other and 10-digit dialing applies throughout.
Split of 301; 1997: overlaid by 443; 2012: overlaid by 667.
Who called me from 410?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 410 does not prove the caller is really in the 410 region or even in the United States.
- Avoid calling back unknown one-ring numbers — some premium-rate scams rely on curiosity callbacks.
- Never share verification codes, payment details, or remote access during an unsolicited call, even if the caller claims to be your bank or a government agency.
- When a 410 call pressures you to act immediately, hang up and contact the organization directly through its official number.
Be the first to add a community report for a 410 number below.
Frequently asked questions
FAQWhat area code is 410?+–
410 is a telephone area code serving Baltimore in Maryland, United States, in service since 1991.
Where is area code 410 located?+–
It covers Baltimore County, Calvert County, Harford County and other counties, including Annapolis, Columbia and Atlantic Ocean in Maryland.
What cities are in area code 410?+–
Major communities on record include Annapolis, Columbia and Atlantic Ocean. The code's territory spans the Baltimore region of Maryland.
What time zone is 410?+–
410 observes Eastern (ET), which is UTC−5 / −4 DST and follows daylight saving time.
When did area code 410 start?+–
410 entered service in 1991. Its history: split of 301; 1997: overlaid by 443; 2012: overlaid by 667.
Why do calls to 410 require 10-digit dialing?+–
410 shares its territory with overlay code 443 and 667. Because both codes serve the same geographic area, the phone network needs all 10 digits to route a call, and calls between the codes are still local.
Is 410 a scam area code?+–
Scam and robocall traffic can use any North American code, 410 included — caller ID is easy to spoof, so the code alone does not tell you who is really calling. Check the community reports on this page before calling back an unknown 410 number, and report anything suspicious.
Can I get a 410 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 410 number regardless of where you physically live.