Grand Detour, Illinois ZIP Code - United States

The location Grand Detour, IL has an unique ZIP Codes assigned (61021). Although this location name (Grand Detour, IL) is set as NOT ACCEPTABLE (meaning it is an inadequate city name). So looking for the ZIP Code 61021 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
Dixon, IL	PRIMARY	61021	STANDARD	18.516
Nelson, IL	ACCEPTABLE	61021	STANDARD	18.516

Postal Zone of Grand Detour, IL - USA

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

Grand Detour, IL belongs to which county?

Grand Detour, IL belongs to Lee county. Check the list of Lee 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.