Area code 240
Area code 240 serves Hagerstown and nearby parts of Maryland, including Rockville, Frederick and Bethesda. It is on Eastern Time, which observes daylight saving time. 301 and 227 are overlays for the same area.
Area code 240 at a glance
Cities in 240
- Hagerstown
- Rockville
- Frederick
- Bethesda
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 240 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 240 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 240 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 240 without leaving your CRM
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Other area codes in Maryland
Questions about 240
What time zone is area code 240?
Area code 240 is on Eastern Time. It observes daylight saving time.
Where is area code 240?
Area code 240 is in Maryland. Its main city is Hagerstown, and it also covers Rockville, Frederick and Bethesda.
What are the legal hours to call a 240 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 240?
301 and 227 cover the same area as 240, so numbers in the same town can have either code.