Caller ID for
Area code 410
Area code 410 Baltimore, Maryland
Area code 410 is in Maryland, with numbers assigned in Baltimore, Towson, Annapolis and 79 more places. It’s 12:14 AM there now.
- State
- Maryland6 area codes in Maryland
- Time zone
- Eastern12:14 AM there now
- Exchanges
- 78382 places
- Overlay
- 443 and 667Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 410 is
Numbers in 410 are assigned to 82 places in 17 counties: Baltimore city, Baltimore County, Anne Arundel County, Howard County, Harford County, Wicomico County, plus 11 more.
Baltimore has the most, 24% of the exchanges; the rest are spread across 81 other places.
- Baltimore189
- Towson53
- Annapolis36
- Catonsville35
- Glen Burnie29
- Salisbury24
- Elkridge20
- Columbia20
- Pikesville19
- Severna Park18
- Ellicott City16
- Cockeysville16
- Easton14
- Parkville14
- Woodlawn12
- Arbutus10
- Essex10
- Bel Air10
- Severn9
- Westminster8
- Edgewood8
- Ocean City7
- Reisterstown7
- Elkton7
Phone companies in 410
783 blocks of numbers in 410 are held by 24 phone companies. The most belong to Verizon (507), Verizon Wireless (53) and AT&T Mobility (51).
Mostly landline: about 66% of blocks belong to local phone and cable companies, 17% to wireless networks and 17% to other carriers.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
410 went into service in 1991, added to the area of 301.
443 (since 1997) and 667 (since 2012) share the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
2 new exchanges were assigned since 2021, the latest in July 2023.
Calling 410
It’s 12:14 AM Eastern time in 410 right now.
From elsewhere in the U.S., dial 1, 410 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
Maryland has 6 area codes: 227, 240, 301, 410, 443 and 667.
- 202 · Washington, DC · about 34 mi
- 771 · Washington, DC · about 34 mi
- 240 · Frederick, MD · about 53 mi
- 302 · Wilmington, DE · about 53 mi
- 703 · Herndon, VA · about 54 mi
- 571 · Herndon, VA · about 55 mi
From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.
Map of the 410 area code
Map of the 410 area code around Baltimore, Towson and Annapolis, Maryland.
Cities on the map
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Questions about 410
Where is area code 410?
In Maryland, covering Baltimore, Towson and Annapolis and other places across 17 counties.
What time zone is 410 in?
Eastern time. It was 12:14 AM there when this page loaded.
Is 410 an overlay?
Yes. 443 and 667 serve the same area, so dial all 10 digits for local calls.
Which phone companies have 410 numbers?
24 companies hold blocks; the most belong to Verizon, Verizon Wireless and AT&T Mobility. About 17% of blocks are wireless.
Is 410 running out of numbers?
Not on record. 2 new exchanges have been assigned since 2021.