Jefferson, Illinois ZIP Code - United States

The location Jefferson, IL has an unique ZIP Codes assigned (60630). Although this location name (Jefferson, IL) is set as NOT ACCEPTABLE (meaning it is an inadequate city name). So looking for the ZIP Code 60630 we have found out the following locations (for your mailing or form filling you should use an ACCEPTABLE or PRIMARY location name).

	City Name	ZIP Code	ZIP Type	Estimated Population
Chicago, IL	PRIMARY	60630	STANDARD	44.993
Jefferson Park, IL	ACCEPTABLE	60630	STANDARD	44.993
Jefferson Pk, IL	ACCEPTABLE	60630	STANDARD	44.993

Postal Zone of Jefferson, IL - USA

Jefferson, Illinois ZIP Code - United States — ZIP Code Tabulation Areas (ZCTAs) for Jefferson, IL ZIP Code. A ZCTA is a generalized area representation of the american ZIP Code service area.

Jefferson, IL belongs to which county?

Jefferson, IL belongs to Cook county. Check the list of Cook county ZIP Code.

ZIP Code Illinois

Check the list of Illinois ZIP Code.

ZIP Code United States

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Status Definitions

PRIMARY: means an the primary city name. Official city name, although the city name might also have another acceptable name.
ACCEPTABLE: means an adequate city name. City names that are abbreviated will frequently be listed as unacceptable because abbreviations are not an acceptable city name format.
IMPROPER/NOT ACCEPTABLE: Means an inadequate city name has been entered or received based on information entered.
UNIQUE: Assigned to a company, government agency, or entity with sufficient mail volume, based on average daily volume of letter size mail received, availability of ZIP Code numbers in the postal area, and the US mail service cost-benefit analysis.