464 Area Code: Chicago, Illinois

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Area Code 464 Information

State: Illinois
Primary City: Chicago
Primary Carrier: T-Mobile
Other Cities: Aurora, Belleville, Cicero

Neighborhood Demographics

Based on US Census data for Chicago

35.7 y/o

Median Age

Compared to the US median age of 38.7 y/o

$75.1K

Median Income

Compared to the US median income of $78.5K

$315.2K

Median Home Value

Compared to the US median home value of $303.4K

2.7M

Chicago Population

Compared to the US median city population of 171.9K

Active Prefixes in the 464 Area Code

About the 464 Area Code

Chicago's 464 area code is an overlay covering the same west and southwest suburban footprint long served by the older 708. Chicago itself anchors the directory's records here, on the southwestern bend of Lake Michigan where the city's neighborhoods rise from a flat lakefront plain. The 464 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 cities and villages of inner south Cook County and the surrounding region.

In records the directory has compiled for 464 numbers, other Illinois cities — Aurora, Belleville, Cicero, and Peoria among them — appear regularly. None of those are inside the 464 footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across Illinois and addresses linked across multiple cities. The directory currently documents 4 distinct prefixes within 464 in detail, an early-stage subset that should be read as the start of working coverage rather than a comprehensive count.

Chicago's population is its dominant demographic feature: the city sits among the largest in the country by total headcount, with a metropolitan area many times its city-level size. Home values within the city run a touch above the US median, household income lands close to the national reading, and the city's median age sits a few years under the US figure. The 464 footprint specifically covers the south and west suburban region rather than the downtown core, where housing readings and income profiles differ from the citywide averages.