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Iowa · Woodbury

51111 ZIP Code

51111 is associated with Sioux City, Iowa. The page shows the county, timezone, nearby ZIPs and links to the state hub for a nearby city generator.

ZIP details

ZIP code
51111
City
Sioux City
State
Iowa (IA)
County
Woodbury
Timezone
America/Chicago
State sales tax
Varies by state
Open map Iowa hub

Nearby ZIP codes

51109Sioux City, IA51108Sioux City, IA51106Sioux City, IA51105Sioux City, IA51104Sioux City, IA51103Sioux City, IA51102Sioux City, IA51101Sioux City, IA

Questions about 51111

What city is ZIP code 51111 in?+
51111 is associated with Sioux City, Iowa in the bundled dataset. ZIP areas can cross city and county lines, so use the city and county fields together.
What county is 51111 in?+
Woodbury. County boundaries and postal areas are not the same thing; a ZIP can serve addresses in more than one county.
What timezone is 51111 in?+
America/Chicago. This is the IANA timezone name for the city associated with the ZIP.
Is 51111 a real ZIP code?+
It appears in the public city dataset bundled with this site. That confirms the format and city association, not that a specific street, mailbox, or resident exists.
All ZIP codesValidate a full address