410 Area Code — Baltimore, MD
Area code 410 serves Baltimore and 3 other cities in Maryland. Local time follows America/New_York. It overlays with 443, 667, so 10-digit dialling is required.
- State
- Maryland
- Primary city
- Baltimore
- Timezone
- America/New_York
- In service since
- 1991
- Type
- Geographic
Cities Served by 410
The 410 area code covers 4 cities and communities in Maryland.
- Baltimore
- Annapolis
- Towson
- Glen Burnie
About Area Code 410
Area code 410 is a North American Numbering Plan (NANP) area code that has been in service since 1991. It is administered by NANPA on behalf of the FCC and serves the Maryland region anchored on Baltimore.
410 now shares its territory with overlay codes (443, 667). 10-digit dialling is required for local calls within this region because the same 7-digit number can be assigned under either code.
Mobile numbers in 410 are portable: a person who moved away from Baltimore may still carry a 410 mobile number on their device. If you receive an unexpected call from a 410 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Maryland, you may also interact with neighbouring or overlay codes (443, 667). See the related codes section below to explore the rest of Maryland.
Other Maryland Area Codes
Continue exploring the Maryland numbering plan.
410 Area Code FAQ
Where is area code 410?
Area code 410 is located in Maryland, primarily serving Baltimore and surrounding cities including Annapolis, Towson, Glen Burnie. The region operates on ET (America/New_York) time.
What state is 410 area code?
410 is a Maryland area code. It was put into service in 1991 and shares its geographic footprint with overlay codes 443, 667.
Is 410 a scam area code?
410 is a legitimate North American area code allocated by NANPA to Maryland. Like any geographic area code, scammers sometimes spoof 410 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 410 use?
Area code 410 operates on ET (America/New_York). Numbers in this area code follow standard Maryland time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 410 phone number?
Yes. Use the reverse lookup widget above to enter a full 410 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 410 and 443?
410 and 443 cover the same Maryland geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.