Area code 410
Area code 410 serves Baltimore and nearby parts of Maryland, including Annapolis, Columbia and Towson. It is on Eastern Time, which observes daylight saving time. 443 and 667 are overlays for the same area.
Area code 410 at a glance
Cities in 410
- Baltimore
- Annapolis
- Columbia
- Towson
An area code shows where a number was first assigned. Mobile numbers keep their area code when people move, so the person you’re calling may be somewhere else.
When you can call a 410 number
Federal telemarketing rules under the TCPA allow sales calls between 8 AM and 9 PM in the called person’s local time. Here is that window for a 410 number, shown in your own time zone.
General information, not legal advice. Some states add rules for Sundays, holidays or the number of calls. See our calling hours guide.
| If you’re on | You can call 410 between |
|---|---|
| Eastern | 8:00 AM to 9:00 PM |
| Central | 7:00 AM to 8:00 PM |
| Mountain | 6:00 AM to 7:00 PM |
| Arizona | 5:00 AM to 6:00 PM |
| Pacific | 5:00 AM to 6:00 PM |
See the time in 410 without leaving your CRM
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Other area codes in Maryland
Questions about 410
What time zone is area code 410?
Area code 410 is on Eastern Time. It observes daylight saving time.
Where is area code 410?
Area code 410 is in Maryland. Its main city is Baltimore, and it also covers Annapolis, Columbia and Towson.
What are the legal hours to call a 410 number?
Under the federal TCPA, sales calls are allowed from 8 AM to 9 PM in the called person’s local time. Personal and informational calls are not limited by these hours.
What area codes overlay 410?
443 and 667 cover the same area as 410, so numbers in the same town can have either code.