Sioux City zip code

Zip code in Sioux City, IA

The location Sioux City belongs to Woodbury County, state of Iowa. Sioux City has 9 zip codes which you can see in the following table.

Sioux City is the official name of the location so if you want to use the US Postal Service you must use that name.

Zip code	Type	Population
51101	STANDARD	520
51102	PO BOX	968
51103	STANDARD	14,010
51104	STANDARD	19,920
51105	STANDARD	7,950
51106	STANDARD	24,400
51108	STANDARD	5,320
51109	STANDARD	2,700
51111	STANDARD	73

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