Area code 240: Rockville, Maryland
Area code 240 is a Maryland code serving Rockville, Silver Spring, Frederick and Hagerstown, on Eastern Time. It overlays 227, 301, so numbers in the same area may start with any of them. From abroad, dial +1 240 and the 7-digit number.
Updated
At a glance
- State
- Maryland
- Places served
- Rockville, Silver Spring, Frederick, Hagerstown
- Time zone
- Eastern TimeUTC−5, UTC−4 in summer
- Overlay codes
- 227, 301Same area, assigned when numbers ran short.
- Country
- United States (+1)
- Number format
- (240) 555-0123+1 240 555 0123 in international format
How to call a 240 number
All +1 numbers are 10 digits: the 3-digit area code and a 7-digit local number.
| Calling from | Dial |
|---|---|
| Inside the US or Canada | 1 240 555 0123 |
| The UK and most of Europe | 00 1 240 555 0123 |
| Australia | 0011 1 240 555 0123 |
| Any mobile | +1 240 555 0123 |
555-0123 is a placeholder; use the real 7-digit number.
Get a (240) number without living there
A callmins US number costs $2.00/month, no setup fee. It rings in your browser or the callmins app anywhere in the world, receives texts, and needs no ID or local address. When you buy, search by area code to look for a 240 number.
Availability changes daily
Popular codes sell out. If there's no 240 number free, try the overlay codes 227, 301 or another Maryland code below. US numbers don't receive WhatsApp codes; use a UK number for that.
Other Maryland area codes
Questions people ask
Where is area code 240?
Area code 240 is in Maryland, the United States. It serves Rockville, Silver Spring, Frederick and Hagerstown, and shares the same area with 227, 301 (overlay codes).
What time zone is area code 240?
Area code 240 is on Eastern Time (UTC−5, UTC−4 in summer). Where an area straddles a time-zone line, this is the time most of its callers keep.
How do I call a 240 number from abroad?
Dial your exit code, then 1, then 240 and the 7-digit number: 00 1 240 from the UK and most of Europe, or +1 240 from any mobile. Inside the US and Canada, dial 1 240 and the number.
Is a call from area code 240 a scam?
240 is an ordinary geographic area code, not a premium-rate or toll-free one. But caller ID can be faked, so a familiar-looking local code proves nothing about who is calling. Don't share codes or payment details with an unexpected caller.
Can I get a 240 phone number?
You can search callmins for a 240 number when you buy a US number ($2.00/month, no setup fee). Which area codes have numbers free changes daily; if 240 has none, pick a nearby or overlay code such as 227.
Related
A 240 number, in your browser.
$2.00/month, no setup fee. Calls and texts on your laptop or phone, from anywhere.
Area code details are compiled from North American Numbering Plan assignments and list the best-known places served; check NANPA for the full boundary.