SIOUX CITY, IA ZIP Code
| City | SIOUX CITY |
| State | Iowa |
| ZIP Codes count | 9 (see all) |
| Post offices count | 1 (see all) |
| Total population | 82,486 (see all) |
ZIP Codes in SIOUX CITY, Iowa
The ZIP Codes in SIOUX CITY, Iowa fall within the range from 51101 to 51111. SIOUX CITY is covered by 9 ZIP Codes: 8 Standard and 1 PO Box. Below is the complete list:
51101, 51102, 51103, 51104, 51105, 51106, 51108, 51109, 51111
This list contains only 5-digit ZIP codes. Use our zip code lookup by address feature to get the full 9-digit (ZIP+4) code.
List of SIOUX CITY, IA ZIP Codes
| ZIP | TYPE | POPU |
|---|---|---|
| 51101 | STANDARD | 649 |
| 51102 | PO BOX | – |
| 51103 | STANDARD | 17,176 |
| 51104 | STANDARD | 23,038 |
| 51105 | STANDARD | 10,902 |
| 51106 | STANDARD | 27,491 |
| 51108 | STANDARD | 5,431 |
| 51109 | STANDARD | 3,453 |
| 51111 | STANDARD | 80 |
Post offices
SIOUX CITY — Post Office™ 214 JACKSON ST SIOUX CITY, IA 51101-9998 |
Envelope example
On the bottom center of the envelope, write the address you want your letter delivered to. Include the following on separate lines:
- Recipient's full name
- Full street address
- City, State, and ZIP Code
Using the same format, write the return address in the top left corner.
Using the full ZIP+4 Code when mailing via the USPS ensures the fastest, most accurate mailing possible. If you are not sure of the full 9-digit ZIP Code, use the 5-digit ZIP Code to avoid loss of letter or package.

The recipient address information is provided for your reference.
Address example
3482 DODGE AVE
SIOUX CITY IA 51106-1230
SIOUX CITY IA 51106-1230
4543 DUSTIN DR
SIOUX CITY IA 51111-1039
SIOUX CITY IA 51111-1039
3201 GLEN OAKS BLVD
SIOUX CITY IA 51104-1750
SIOUX CITY IA 51104-1750
825 PAUL AVE
SIOUX CITY IA 51109-1430
SIOUX CITY IA 51109-1430
3183 SUMAC TRL
SIOUX CITY IA 51106-5433
SIOUX CITY IA 51106-5433
599 W 28TH ST
SIOUX CITY IA 51103-1935
SIOUX CITY IA 51103-1935
Map
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Census data for SIOUX CITY, IA
Demographic and housing estimates in SIOUX CITY, IA
| Total population | 82,486 |
| Male | 40,647 |
| Female | 41,839 |
| Total population | 82,486 |
| Under 5 years | 6,371 |
| 5 to 9 years | 6,027 |
| 10 to 14 years | 6,044 |
| 15 to 19 years | 5,995 |
| 20 to 24 years | 6,218 |
| 25 to 34 years | 11,592 |
| 35 to 44 years | 9,847 |
| 45 to 54 years | 9,686 |
| 55 to 59 years | 4,703 |
| 60 to 64 years | 4,786 |
| 65 to 74 years | 6,189 |
| 75 to 84 years | 3,457 |
| 85 years and over | 1,571 |
| Median age (years) | 34.1 |
| Under 18 years | 21,686 |
| 16 years and over | 62,951 |
| 18 years and over | 60,800 |
| 21 years and over | 56,717 |
| 62 years and over | 14,200 |
| 65 years and over | 11,217 |
| Total population | 82,486 |
| One race | 79,863 |
| White | 69,028 |
| Black or African American | 3,556 |
| American Indian and Alaska Native | 1,758 |
| Asian | 2,880 |
| Native Hawaiian and Other Pacific Islander | 267 |
| Some other race | 2,374 |
| Two or more races | 2,623 |
| Citizen, VOTING AGE 18 and over population | 56,651 |
| Male Citizen, VOTING AGE 18 and over population | 27,545 |
| Female Citizen, VOTING AGE 18 and over population | 29,106 |
Social characteristics in SIOUX CITY, IA
| Total households | 31,244 |
| Family households (families) | 19,978 |
| Married-couple family | 13,387 |
| Male householder, no wife present, family | 1,943 |
| Female householder, no husband present, family | 4,648 |
| Nonfamily households | 11,266 |
| Average household size | 2.55 |
| Average family size | 3.16 |
Economic characteristics in SIOUX CITY, IA
| Total households | 31,244 |
| Less than $10,000 | 2,012 |
| $10,000 to $14,999 | 1,365 |
| $15,000 to $24,999 | 3,475 |
| $25,000 to $34,999 | 3,902 |
| $35,000 to $49,999 | 3,972 |
| $50,000 to $74,999 | 6,488 |
| $75,000 to $99,999 | 4,320 |
| $100,000 to $149,999 | 3,621 |
| $150,000 to $199,999 | 1,142 |
| $200,000 or more | 947 |
| Median household income (dollars) | 53,281 |
Housing characteristics in SIOUX CITY, IA
| Total housing units | 33,717 |
| Occupied housing units | 31,244 |
| Vacant housing units | 2,473 |
| Total housing units | 33,717 |
| 1-unit, detached | 23,508 |
| 1-unit, attached | 1,076 |
| 2 units | 1,396 |
| 3 or 4 units | 1,445 |
| 5 to 9 units | 1,393 |
| 10 to 19 units | 1,210 |
| 20 or more units | 2,645 |
| Mobile home | 1,006 |
| Boat, RV, van, etc. | 38 |
| Total housing units | 33,717 |
| Built 2014 or later | 108 |
| Built 2010 to 2013 | 302 |
| Built 2000 to 2009 | 1,821 |
| Built 1990 to 1999 | 3,176 |
| Built 1980 to 1989 | 1,646 |
| Built 1970 to 1979 | 4,024 |
| Built 1960 to 1969 | 3,646 |
| Built 1950 to 1959 | 4,708 |
| Built 1940 to 1949 | 2,811 |
| Built 1939 or earlier | 11,475 |
| Total housing units | 33,717 |
| 1 room | 760 |
| 2 rooms | 1,044 |
| 3 rooms | 2,780 |
| 4 rooms | 6,183 |
| 5 rooms | 6,123 |
| 6 rooms | 5,347 |
| 7 rooms | 3,960 |
| 8 rooms | 3,153 |
| 9 rooms or more | 4,367 |
| Median rooms | 5.5 |
| Total housing units | 33,717 |
| No bedroom | 844 |
| 1 bedroom | 4,367 |
| 2 bedrooms | 10,609 |
| 3 bedrooms | 12,044 |
| 4 bedrooms | 4,746 |
| 5 or more bedrooms | 1,107 |
| Occupied housing units | 31,244 |
| Owner-occupied | 19,269 |
| Renter-occupied | 11,975 |
| Average household size of owner-occupied unit | 2.68 |
| Average household size of renter-occupied unit | 2.35 |
| Occupied housing units | 31,244 |
| Moved in 2017 or later | 1,476 |
| Moved in 2015 to 2016 | 4,189 |
| Moved in 2010 to 2014 | 9,579 |
| Moved in 2000 to 2009 | 7,685 |
| Moved in 1990 to 1999 | 3,770 |
| Moved in 1989 and earlier | 4,545 |
| Owner-occupied units | 19,269 |
| Less than $50,000 | 1,645 |
| $50,000 to $99,999 | 6,839 |
| $100,000 to $149,999 | 4,948 |
| $150,000 to $199,999 | 3,024 |
| $200,000 to $299,999 | 1,895 |
| $300,000 to $499,999 | 823 |
| $500,000 to $999,999 | 75 |
| $1,000,000 or more | 20 |
| Median (dollars) | 110,300 |
| Owner-occupied units | 19,269 |
| Housing units with a mortgage | 11,522 |
| Housing units without a mortgage | 7,747 |
| Occupied units paying rent | 11,568 |
| Less than $500 | 2,118 |
| $500 to $999 | 7,303 |
| $1,000 to $1,499 | 1,788 |
| $1,500 to $1,999 | 99 |
| $2,000 to $2,499 | 91 |
| $2,500 to $2,999 | 23 |
| $3,000 or more | 146 |
| Median (dollars) | 752 |
| No rent paid | 407 |
Data is based on 2018 Census
ZIP Codes for other locations
State for SIOUX CITY
Iowa ZIP CodesOther cities in Iowa