730 Area Code: Belleville, Illinois

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Area Code 730 Information

State: Illinois
Primary City: Belleville
Primary Carrier: Verizon
Other Cities: Aurora, Chicago, Cicero

Neighborhood Demographics

Based on US Census data for Belleville

38.3 y/o

Median Age

Compared to the US median age of 38.7 y/o

$60.5K

Median Income

Compared to the US median income of $78.5K

$131K

Median Home Value

Compared to the US median home value of $303.4K

41.7K

Belleville Population

Compared to the US median city population of 171.9K

Active Prefixes in the 730 Area Code

About the 730 Area Code

Illinois's 730 area code is among the newer overlays planned for the southern part of the state, sharing geography with the long-running 618. Belleville, in St. Clair County immediately east of St. Louis, anchors the directory's records here. The city sits on the rolling country of the metro-east region and historically anchored a substantial German immigrant community alongside the surrounding mining and agricultural economy. The 730 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 618 region across southern Illinois.

In records the directory has compiled for 730 numbers, other Illinois cities — Aurora, Chicago, Cicero, and Peoria — appear regularly. None of those are inside the 730 footprint. The pattern reflects standard public-record dynamics across Illinois. The directory's prefix-level holdings for 730 are still being assembled, and the working count of distinct prefixes we currently track in detail represents an early-stage subset rather than a comprehensive coverage of the prefix population the code will eventually carry.

Belleville's home values come in well below the US median, in line with broader downstate and metro-east Illinois pricing. Median household income runs below the national figure, the city's median age sits close to the US reading, and population places Belleville as one of the larger metro-east cities — substantial within its St. Louis-area footprint but small in the broader Illinois context. The 730 footprint shares those demographics with 618 because both codes serve southern Illinois in overlapping form.