A local number. A little more freedom.
Get a 240
phone number.
A local number for Rockville, MD. Call and text over WiFi or mobile data, on the phone you already have.
- Calls and texts
- No extra SIM
- Location
- Rockville, Maryland
- Time zone
- Eastern (GMT -5)
Where is area code 240 located?
Area code 240 is a Maryland area code, serving Rockville, MD and nearby cities including Baltimore, Columbia, Waldorf. It is in the Eastern (GMT -5) time zone.
Who is calling from area code 240?
A 240 call comes from a number assigned to the Rockville, MD area, which can be a mobile, a landline or an app-based number like AvoCall's. Caller ID can be faked from any area code, so if you don't know the number, let it go to voicemail and never share a code you didn't ask for.
How do I get a 240 phone number?
Pick an available 240 number and sign up for AvoCall. Your new Rockville, MD number works for calls and texts on your existing phone over WiFi or data. No second SIM is needed. Right now 20 numbers in the 240 area code are available on this page (checked October 11, 2026 at 8:24 AM UTC).
Find one that feels like yours
Choose a 240 number
20 numbers listed · Checked October 11, 2026 at 8:24 AM UTC.
- (240) 844-0097Ridge (Livingston), MD
- (240) 207-7235Damascus 236, MD
- (240) 765-1332Washington Zone 05, MD
- (240) 540-0096Washington 238 Zone 13, MD
- (240) 859-0581Ashton 238, MD
- (240) 201-0781Ridge (Livingston), MD
- (240) 201-1908Ridge (Livingston), MD
- (240) 451-6305Thurmont, MD
- (240) 219-1241Ridge (Livingston), MD
- (240) 219-1605Ridge (Livingston), MD
- (240) 207-7562Damascus 236, MD
- (240) 358-0242Damascus 236, MD
- (240) 451-6456Thurmont, MD
- (240) 844-0096Ridge (Livingston), MD
- (240) 509-1262Washington 238 Zone 14, MD
- (240) 256-6102Leonardtown, MD
- (240) 569-1727Flintstone, MD
- (240) 201-8356Ridge (Livingston), MD
- (240) 488-8309Oakland, MD
- (240) 774-8556Lonaconing, MD
Every number requires an AvoCall plan. Current web pricing is verified at checkout, and number availability changes often.
About the 240 area code
The Rockville area of Maryland falls under 240, a code shared by Silver Spring, Frederick, Waldorf, and Columbia. Everything in the territory runs on Eastern time.
Active since 1997, the code was placed over the existing 301 area as an overlay. It now forms a three-code overlay complex with 227 and 301, and local dialing throughout the shared area uses ten digits.
Dialing note: 240 is part of an overlay complex with 227, 301, so local calls in this area are dialed with all ten digits.
Numbering details on this page (service dates and overlay status) are checked against the NANPA numbering registry. Registry data as of 10/08/2026.
240 phone number FAQ
- Can I receive verification codes on a 240 number?
- AvoCall 240 numbers support calling and messaging. Verification-text compatibility varies by sender; short-code and 2FA delivery is not guaranteed.
- Which 240 numbers are available right now?
- As of October 11, 2026 at 8:24 AM UTC, 20 240 numbers were available to claim on this page. Inventory is re-checked hourly and changes as numbers are claimed, and availability is confirmed at checkout. See the current list.