🇺🇸 410 area code
Area code 410 covers Baltimore, Annapolis, Columbia and Salisbury and the surrounding area in Maryland. It shares that territory with 443 and 667, so the same neighbourhood can have numbers in any of them. Enter a 410 number below for a free check before you call back.
- Location: Baltimore, Maryland
- Time zone: Eastern (UTC−5)
- In service since October 6, 1991
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Area code 410 at a glance
- Area code
- 410
- Location
- Maryland, United States
- Main cities
- Baltimore, Annapolis, Columbia, Salisbury, Glen Burnie, Bel Air
- Time zone
- Eastern (UTC−5)
- Local time now
- —
- In service since
- October 6, 1991
- Created from
- 301
- Overlay codes
- 443, 667
- Codes split from it
- 443
- Local calls
- Dial 10 digits
- Number format
- (410) 555-0123
- From abroad
- +1 410 555 0123
Cities in area code 410
- Baltimore
- Annapolis
- Columbia
- Salisbury
- Glen Burnie
- Bel Air
- Ellicott City
- Westminster
- Catonsville
- Owings Mills
Is a 410 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so a 410 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 410 number to people in Maryland because a local-looking call is more likely to be answered. If a 410 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 410
410 entered service on October 6, 1991, when it was split from 301.
It is part of the 410/443/667 overlay: the codes cover the same area, and a new line there can be given a number in any of them. Two neighbours — or two phones in one household — can have different area codes. That is also why local calls need the full ten digits.
As the region grew, 443 was carved out of or added to 410.
Area codes
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Вопросы и ответы
Area code 410 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 410?
Area code 410 is in Maryland, United States. It covers Baltimore, Annapolis, Columbia, Salisbury, Glen Burnie and Bel Air.
What time zone is area code 410?
410 is in the Eastern (UTC−5) time zone, and observes daylight saving time.
What area codes overlay 410?
443 and 667 serve the same area as 410. Numbers in all of them are local to one another.
When did area code 410 start?
410 entered service on October 6, 1991, created from 301.
How do I find out who called me from 410?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 410?
If you live in or near Maryland, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 410 callers who will not leave a message are best looked up before you call back.
Got a call from 410?
Run the free check first — validity, carrier, line type and region — and unlock the full report only if you need it.