Waterloo, Iowa ZIP Code - United States

The location Waterloo, IA has 6 differents ZIP Codes. Check the map below to check your ZIP Code.

	City Name	ZIP Code	ZIP Type	Estimated Population
Waterloo, IA	PRIMARY	50701	STANDARD	24.230
Waterloo, IA	PRIMARY	50702	STANDARD	15.833
Waterloo, IA	PRIMARY	50703	STANDARD	13.807
Waterloo, IA	PRIMARY	50704	PO BOX	902
Waterloo, IA	PRIMARY	50706	STANDARD	0
Waterloo, IA	ACCEPTABLE	50707	STANDARD	6.546

Postal Zone of Waterloo, IA - USA

Waterloo, IA belongs to Black Hawk county. Check the list of Black Hawk county ZIP Code.

Check the list of Iowa ZIP Code.

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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.