Area code 240 was introduced in 1997 and serves Western Maryland (overlay), covering cities like Rockville, Gaithersburg, Frederick. It sits in the Eastern (ET) zone and reaches a population of roughly 1.0M+.
With MeraTalk, you can get a 240 number for Maryland in minutes and run all your calls over the internet from any device.
A 240 number gives your business a genuine local footing in Maryland, and the benefits go well beyond a familiar caller ID.
Outbound reps dial Western Maryland (overlay) prospects from a number those prospects recognize. A familiar 240 caller ID gets the conversation started instead of going to voicemail.
Give your Western Maryland (overlay) customers a local number to call for help. Calls route to your support team wherever they sit, with queues, schedules, and an AI receptionist after hours.
Your team doesn't need to live in Maryland to answer a 240 number. Calls ring on laptops and mobiles anywhere, while customers see a hometown business.
Pair your 240 number with local numbers in other markets you serve. Each location keeps its own identity while every call lands in one shared MeraTalk workspace.
Area codes are added as a region's demand for phone numbers grows. Here's when each Maryland code came online — and where 240 fits in.
301 was the first of Maryland's current codes, assigned to Western Maryland and anchored by Rockville. It remains the code most residents associate with Rockville and Gaithersburg.
As Eastern Maryland grew, 410 was introduced to keep up with demand for new numbers around Baltimore and Annapolis. Existing numbers kept their codes — 410 simply opened fresh inventory for the area.
As Western Maryland (overlay) grew, 240 was introduced to keep up with demand for new numbers around Rockville and Gaithersburg. Existing numbers kept their codes — 240 simply opened fresh inventory for the area.
As Eastern MD (overlay) grew, 443 was introduced to keep up with demand for new numbers around Baltimore and Annapolis. Existing numbers kept their codes — 443 simply opened fresh inventory for the area.
As Baltimore (overlay) grew, 667 was introduced to keep up with demand for new numbers around Baltimore and Towson. Existing numbers kept their codes — 667 simply opened fresh inventory for the area.
Make and receive calls and texts from your 240 number on desktop, mobile, or desk phone. One number for everything — no app-switching, no confusion.
Answers, screens, and routes every call to your 240 number around the clock — even when your team is offline or busy.
Every call and text to your 240 number is visible to the whole team — anyone can pick up, reply, or follow up.
Missed calls become readable transcripts delivered to your inbox.
Route Western Maryland (overlay) callers to the right person on your schedule.
Already have a 240 number? Bring it — porting is on every plan.
5 area codes covering Maryland
Area code 240 is part of the North American Numbering Plan (NANP) — the system that assigns three-digit codes to geographic regions across the US, Canada, and parts of the Caribbean. Code 240 was assigned to Western Maryland (overlay) and serves Rockville and Gaithersburg as its primary markets.
When a call is made to a 240 number, the carrier routes it through the Eastern (ET) time zone switching network. This also means that when customers see a 240 number on their caller ID, they immediately associate it with Western Maryland (overlay) — before the call is even answered.
The area code on your caller ID shapes how customers in Western Maryland (overlay) decide whether to pick up or ignore your call.
Calls from a local 240 number are far more likely to be answered than calls from an out-of-state or toll-free number. Customers in Western Maryland (overlay) recognise the code and trust it as local.
A 240 number tells prospects in Maryland that you operate in their market — even if your team is fully remote or based elsewhere. First impressions happen before the first word.
With a cloud-hosted 240 number, your team can answer calls from any device, in any location. The local area code stays consistent while your team stays flexible.
Northeast listed first
Explore other Northeast area codes and find the right local number for every market you serve.
Set up your 240 number on MeraTalk, compare other US area codes, or read the public record for Western Maryland (overlay).
Run your 240 number on a full business phone system — calls, SMS, routing and an AI receptionist included.
On MeraTalkBrowse every US area code by state and find the right local number for the markets you serve.
External referenceSee the FCC's area code relief regulation (47 CFR §52.19) governing how area code 240 and every US area code is administered.
Same product, same support, same compliance on every plan. The AI receptionist is included from day one.
