Fort Dearborn, Illinois ZIP Code - United States

The location Fort Dearborn, IL has 2 differents ZIP Codes. Check the map below to check your ZIP Code.

Although we show the postal codes for the local Fort Dearborn, IL, note that this searched city name (Fort Dearborn, IL) is described as NO ACCEPTABLE (means it is an inappropriate city name). Doing a search we find that the accepted city name for this region is Chicago, IL. For correspondence or filling out a form we suggest using the name of the city that is ACCEPTABLE or PRIMARY.

	City Name	ZIP Code	ZIP Type	Estimated Population
Fort Dearborn, IL	IMPROPER	60610	STANDARD	31.564
Fort Dearborn, IL	IMPROPER	60611	STANDARD	22.612

Postal Zone of Fort Dearborn, IL - USA

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

Fort Dearborn, IL belongs to which county?

Fort Dearborn, 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.