Area code 410 — Maryland
Area code 410 is in Maryland and serves Baltimore, Annapolis, Columbia, Atlantic Ocean. Time zone, overlays, counties and ZIP codes.
| Location | Maryland (Baltimore, Annapolis, Columbia, and all counties and cities which touch the Chesapeake Bay, the Atlantic Ocean, or Delaware, except for St. Mary's County (in 301)) |
|---|---|
| Main places | Baltimore, Annapolis, Columbia, Atlantic Ocean |
| State | Maryland |
| Status | In service · since 1991 |
| Time zone | Eastern · |
| Overlay codes | 443667 Overlays share the same area. Local calls usually need 10-digit dialing. |
| Local dialing | 10 digits |
History
- Split of 301
- 1997: overlaid by 443
- 2012: overlaid by 667
Counties (approximate)
Anne ArundelAnne Arundel CountyBaltimoreBaltimore (city)Baltimore CountyBaltimore cityCarolineCaroline CountyCarrollCarroll CountyCecilCecil CountyDorchester CountyHarfordHarford CountyHowardHoward CountyKent CountyMontgomery CountyPrince George'sPrince George's CountyQueen Anne'sQueen Anne's CountySomersetSomerset CountyTalbot CountyWicomicoWicomico CountyWorcesterWorcester County
ZIP codes in area code 410
Approximate: area code boundaries follow telephone rate centers, not ZIP codes.
20701 Annapolis Junction20707 Laurel20709 Laurel20711 Lothian20714 North Beach20715 Bowie20716 Bowie20723 Laurel20724 Laurel20725 Laurel20726 Laurel20733 Churchton20751 Deale20755 Fort George G Meade20758 Friendship20759 Fulton20763 Savage20764 Shady Side20765 Galesville20774 Upper Marlboro20776 Harwood20777 Highland20778 West River20779 Tracys Landing20794 Jessup20861 Ashton20862 Brinklow20866 Burtonsville20868 Spencerville21001 Aberdeen21005 Aberdeen Proving Ground21009 Abingdon21010 Gunpowder21012 Arnold21013 Baldwin21014 Bel Air21015 Bel Air21017 Belcamp21018 Benson21020 Boring
Format a 410 number
US numbers are written as (410) 555-0123 or 410-555-0123. From outside the US, dial +1 410 555 0123.
Is a call from 410 a scam?
An area code only tells you where a number was assigned. Caller ID can be faked (“spoofed”), so do not trust a call just because the area code looks local. Never share codes or payment details with unexpected callers.
Sources: NANPA via NumberResearch.org (CC BY 4.0); place names and history from Wikipedia (CC BY-SA 4.0). See data sources.