947 Area Code: Troy, Michigan

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Area Code 947 Information

State: Michigan
Primary City: Troy
Primary Carrier: Verizon
Other Cities: Ann Arbor, Detroit, Flint

Neighborhood Demographics

Based on US Census data for Troy

42.2 y/o

Median Age

Compared to the US median age of 38.7 y/o

$119.3K

Median Income

Compared to the US median income of $78.5K

$396.8K

Median Home Value

Compared to the US median home value of $303.4K

87.3K

Troy Population

Compared to the US median city population of 171.9K

Active Prefixes in the 947 Area Code

About the 947 Area Code

Michigan's 947 area code is an overlay sharing geography with the long-running 248 across northern suburban Detroit. Troy anchors the directory's records here. The city sits in southern Oakland County, organized around a substantial concentration of corporate offices, an automotive engineering and supplier base, and an extensive postwar residential footprint. The 947 designation, part of the North American Numbering Plan, has been filling with allocations as Oakland County's number demand has continued to push past what 248 alone could support, and the broader footprint extends through Pontiac, Bloomfield Hills, Birmingham, Royal Oak, and the surrounding Oakland County cities.

In records the directory has compiled for 947 numbers, other Michigan cities — Ann Arbor, Detroit, Flint, and Grand Rapids — appear regularly. None of those are inside the 947 footprint. The pattern reflects standard public-record dynamics across Michigan. The directory currently documents 18 distinct prefixes within 947 in detail, an early-stage subset that should be read as a working slice of the prefix population the code will eventually carry.

Troy's median household income runs well above the US figure, in line with the broader Oakland County profile that combines automotive engineering, finance, and a substantial higher-income residential base. Home values come in well above the national median, the city's median age sits noticeably above the US reading at roughly the low forties, and population places Troy as one of the larger suburbs in southeast Michigan. The 947 footprint shares those demographics with 248 because both codes serve the same north-suburban Detroit region in overlapping form.