227 Area Code: Germantown, Maryland

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Area Code 227 Information

State: Maryland
Primary City: Germantown
Primary Carrier: T-Mobile
Other Cities: Baltimore

Neighborhood Demographics

Based on US Census data for Germantown

37.6 y/o

Median Age

Compared to the US median age of 38.7 y/o

$112.1K

Median Income

Compared to the US median income of $78.5K

$401.4K

Median Home Value

Compared to the US median home value of $303.4K

90.5K

Germantown Population

Compared to the US median city population of 171.9K

Active Prefixes in the 227 Area Code

About the 227 Area Code

Maryland's 227 area code is among the newer overlays planned for the western and central parts of the state, sharing geography with the long-running 240 and 301. Germantown, in Montgomery County north of Washington, anchors the directory's records here. Germantown sits on a stretch of suburban country that has filled in steadily through the past several decades as the broader Washington metropolitan area has expanded into the I-270 corridor. The 227 designation, part of the North American Numbering Plan, is in the early phases of being filled with active number assignments and shares its broader footprint with the entire 240/301 region.

In records the directory has compiled for 227 numbers, Baltimore — Maryland's largest city — appears in records linked to 227 numbers despite lying outside the code's footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across Maryland and addresses linked across multiple cities. The directory currently documents 2 distinct prefixes within 227 in detail, an early-stage subset that should be read as the start of working coverage rather than a comprehensive count.

Germantown's median household income runs well above the US figure, in line with the broader Montgomery County profile that combines federal employment, professional services, and a substantial higher-income residential base. Home values come in well above the national median, the city's median age sits close to the US reading, and population places Germantown as one of the larger unincorporated census-designated places in Maryland — substantial within the broader Washington metro corridor.