Sioux City ZIP codes, Iowa
Sioux City, IA has 9 ZIP codes, from 51101 to 51111, and area code 712. The largest are 51106, 51104 and 51103.
- USPS city name
- 9 ZIP codes
- Overlapping the city
- 1 more
- Population
- 86,101
- Area code
- 712
- County
- Woodbury County
- State
- Iowa
Mail addressed to Sioux City uses the ZIP codes above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.
Sioux City in numbers
About 86,101 people live in Sioux City, in 32,926 households, the 4th-largest of Iowa's 1,017 census places. The median household income is $68,906 a year, 8% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $173,600 (17% below the Iowa median), and median gross rent is $976 a month. The median age is 34.9; 22.9% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 18 minutes.
| Population | 86,101 |
|---|---|
| Households | 32,926 |
| Median age | 34.9 |
| Median household income | $68,906 |
| Median home value | $173,600 |
| Median gross rent | $976 |
| Bachelor's degree or higher | 22.9% |
| Mean commute | 17.5 min |
| Population density | 1,456 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Sioux City city. Survey estimates carry margins of error, wider for small places. Sources and methods.
ZIP codes addressed as Sioux City
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
51106 | Sioux City , IA | Standard | 28,592 | $78,434 | $200,200 |
51104 | Sioux City , IA | Standard | 23,197 | $75,362 | $211,100 |
51103 | Sioux City , IA | Standard | 16,895 | $58,197 | $142,900 |
51105 | Sioux City , IA | Standard | 10,415 | $51,786 | $96,200 |
51108 | Sioux City , IA | Standard | 5,960 | $81,205 | $169,700 |
51109 | Sioux City , IA | Standard | 3,606 | $79,034 | $130,900 |
51101 | Sioux City , IA | Standard | 1,031 | $15,300 | — |
51102 | Sioux City , IA | No street area | — | — | — |
51111 | Sioux City , IA | Standard | 39 | — | — |
Other ZIP codes overlapping Sioux City
These ZIP codes cover part of Sioux City but are addressed as somewhere else.
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
51054 | Sergeant Bluff , IA | Standard | 5,583 | $119,716 | $301,900 |
Map of Sioux City ZIP codes
The ZIP codes of Sioux City, IA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Towns near Sioux City
The nearest larger towns are Sioux Falls, SD (201,469 people, 74 mi) and Omaha, NE (488,837 people, 87 mi).
| Town | Population | Distance |
|---|---|---|
| South Sioux City, NE | 13,907 | 2.6 mi |
| Dakota Dunes, SD | 3,936 | 4.8 mi |
| Dakota City, NE | 2,675 | 5.6 mi |
| North Sioux City, SD | 3,045 | 6.0 mi |
| Sergeant Bluff | 5,171 | 7.0 mi |
| Elk Point, SD | 2,537 | 19.6 mi |
| Le Mars | 10,640 | 22.6 mi |
More nearby: every ZIP code in Woodbury County · Iowa ZIP codes
Cite this page
zipcodes.pro. “Sioux City, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/sioux-city
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