227 Area Code: Maryland's DC Suburbs & the Mountains

The 227 area code is the newest of three codes that share a single stretch of Maryland — the western mountains and the Maryland side of the Washington, D.C. suburbs. It is an overlay on 301 and 240, which means a 227 number sits on the same streets as those older codes, from the Appalachian hills around Cumberland to the dense, affluent suburbs of Bethesda and Silver Spring.

This guide explains where 227 reaches, how it joined 301 and 240 as a third code, the very different regions it covers, the 10-digit dialing it requires, and how to get a 227 number from anywhere.

Where is the 227 area code?

The 227 area code covers western Maryland and the Maryland portion of the D.C. metro — the same territory as 301 and 240. It runs from the mountains of far western Maryland east through Frederick and down into the populous Washington suburbs of Montgomery and Prince George's counties, plus southern Maryland.

Cities and towns inside the 227/301/240 footprint include:

227 joins 301 and 240: three codes, one region

Most overlay regions juggle two codes. This one runs three. 301 is the original, assigned in 1947 for western and southern Maryland. As the D.C. suburbs boomed, 240 was added as an overlay in 1997. And when those two together began to run low, 227 went into service on June 14, 2023 as a third overlay on the very same territory.

All three — 301, 240, and 227 — cover identical geography. A 227 number is simply the most recently issued of the trio. For another region that stacks several codes on one map, see New York's 212 area code with its 646 and 332 overlays.

From the mountains to the DC suburbs

What makes this region unusual is how little its two halves have in common. To the west sit the Appalachian mountains — Cumberland, Hagerstown, and small valley towns where the pace is rural and the terrain is rugged. To the southeast sprawl the Washington suburbs — Bethesda, Rockville, Silver Spring, and Gaithersburg, among the densest and most affluent areas in the country, packed with federal workers, biotech firms, and Metro lines.

A 227 number might ring in a mountain hardware store or a Bethesda consultancy — the same code, two completely different worlds.

Is 227 a country code? Meet +227, Niger

Here is a common mix-up. Many people who search "227 area code" are not looking for Maryland at all — they got a call or a WhatsApp message from +227 and want to know where it came from. +227 is the international country code for Niger, in West Africa — not a US area code.

The plus sign tells them apart:

• 227 inside a 10-digit US number (227-XXX-XXXX) is the Maryland area code.
• +227 at the start of an international number is Niger's country code.

If you are getting unexpected calls or WhatsApp messages from +227, be careful. International one-ring ("Wangiri") and WhatsApp scams often use African country codes like +227 to bait you into calling back a premium-rate number. Don't return calls from +227 numbers you don't recognize, and don't share any information.

Dialing and time zone

Because three codes share one region, 10-digit dialing is mandatory across the 227/301/240 area — every local call needs the full area code, even one placed next door.

The 227 area code sits in the Eastern Time Zone (ET) — America/New_York — observing EST (UTC−5) in winter and EDT (UTC−4) in summer.

Why a 227 number works in Maryland's DC suburbs

A 227 number reads as Maryland — the D.C. suburbs or the western part of the state — to anyone in the region. For a Rockville clinic, a Frederick contractor, or a Gaithersburg startup, that local Maryland caller ID lifts answer rates and builds trust far better than an unknown out-of-state or toll-free line, especially in a market crowded with federal and out-of-area numbers.

You do not need a Bethesda office to hold one. My Country Mobile can assign you a 227 number and route it to the phones, laptops, and apps your team already uses, anywhere in the world.

Staying safe from 227 scam calls

Newer overlay codes get spoofed just like established ones. Scammers fake a 227 caller ID — sometimes matching the first digits of your own number — so a call looks like a nearby business or county office. A 227 on your screen does not prove the caller is really in Maryland.

A few habits keep you safe:

• Let unknown 227 calls go to voicemail; legitimate callers leave a message.
• Never share one-time codes, card numbers, or login details with an inbound caller.
• Be wary of "IRS," "utility shutoff," or warrant-style calls that pressure you to act fast.
• Use carrier spam filtering. The FCC's STIR/SHAKEN call authentication framework is why many phones now flag these as "Spam Risk."

How to get a 227 number

Getting a 227 line takes minutes, with no Maryland address required. A cloud phone provider can assign you one and route calls to the devices your team already uses:

1. Sign up for a free account — no card needed to browse inventory.
2. Search 227 (or 301/240) and pick a number from available Maryland inventory.
3. Choose a plan by seat count and features.
4. Route and go live — send calls to a cell, desk phone, or softphone.

Porting an existing 227, 301, or 240 number runs 5–10 business days in the background while you stay live on a temporary number.

Key takeaways

• 227 is the newest overlay on Maryland's 301 and 240, covering western Maryland and the D.C. suburbs.
• The region now runs three codes — 301 (1947), 240 (1997), and 227 (2023) — over identical geography.
• It spans two very different worlds: the Appalachian mountains and the dense Washington suburbs.
• Three shared codes make 10-digit dialing mandatory, and the region runs on Eastern Time.
• A 227 number signals a genuine Maryland presence and can be held from anywhere.

Frequently asked questions