Area code 240

Get a 240 Phone Number Today

A 240 number puts you right in the Maryland suburbs of Washington, from Rockville out to Frederick and Hagerstown. Allo turns that local line into a full phone system with an AI receptionist, call summaries and CRM sync.

Covers: Rockville, Frederick, Hagerstown (Western/Suburban DC)

Main market
Rockville
State
Maryland (MD)
Time zone
Eastern (EST/EDT)
In service since
1997
Type
Overlay, same area as 301
227 +2410 +2

A Maryland number for a demanding market

Clients in the DC suburbs expect a fast, professional answer.

Montgomery County is home to federal agencies, biotech labs and busy professional firms, while Frederick and Hagerstown add a growing mix of small businesses along I-70. A 240 number shows you serve this side of the Potomac and understand how its customers work. It is a small detail that makes cold calls and follow-ups feel less like a stranger dialing in.

240 and 301 are the same territory

240 was added in 1997 as an overlay on western Maryland's 301 area.

Both codes cover the same places, from Rockville to Frederick and Hagerstown, so a 240 number is just as local as a 301 one. The region has since added 227 as well, and new lines are often issued on whichever code has numbers available. Nearby codes like 202 in the District and 703 and 571 in Northern Virginia cover separate areas.

Answer like a firm twice your size

Allo gives your 240 number the features busy teams depend on.

An AI receptionist answers every call around the clock, screens requests and hands off to the right colleague when a human is needed. Calls are recorded and summarized automatically, and contacts and notes sync to HubSpot, Salesforce or Pipedrive. Text clients from the same number, and work from the desktop or mobile app wherever you are.

Why a 240 number wins more calls

A 240 area code gets you picked up. Allo handles what happens next, on every call.

Show up local

A local area code your prospects recognize means more calls get answered and more callbacks come through.

Answer every call 24/7

The AI receptionist picks up when your team can't, answers questions, qualifies the lead and books the meeting.

One number, whole team

Ring your team together or one after another, with business texting built in, so no call slips through.

Every call written up

Recording, summary and next steps land in your CRM automatically, so follow-up is done before you hang up.

Other area codes to explore

Same region, same setup. Pick the prefix your customers know.

Looking for one specific number?

Tell us the number you have in mind. If it is available, we will set it aside for you. If it is already yours, we will move it to Allo for you.

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Area code 240, answered

Area code 240 serves western and suburban Maryland near Washington, DC, including Rockville, Frederick and Hagerstown. It covers the same area as 301.

The 240 area code is in the Eastern Time zone, observing EST in winter and EDT during daylight saving time.

No. Allo provides virtual 240 numbers you can use from anywhere, without an office or address in Maryland. Setup takes minutes.

240 is a Maryland code for the suburbs around Washington, so people in Montgomery County and western Maryland will see it as local. The District itself uses 202 and 771, and Northern Virginia uses codes like 703 and 571.