ZIP Code 51104
| ZIP Code | 51104 |
| City | SIOUX CITY |
| State | IA |
| Type | STANDARD |
| Post offices count | 1 (see all) |
| Total population | 23,038 (see all) |
Cities in ZIP Code 51104
Primary city: SIOUX CITY, IAPost offices
SIOUX CITY — Post Office™ 214 JACKSON ST SIOUX CITY, IA 51101-9998 MoreSIOUX CITY — Post Office™214 JACKSON ST For facility accessibility, please call the Post Office. 1-800-ASK-USPS® (800-275-8777) Hours
Services at this Location Service hours may vary.
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Census data for ZIP Code 51104
Demographic and housing estimates in ZIP Code 51104
| Total population | 23,038 |
| Male | 11,565 |
| Female | 11,473 |
| Total population | 23,038 |
| Under 5 years | 1,703 |
| 5 to 9 years | 1,522 |
| 10 to 14 years | 1,816 |
| 15 to 19 years | 1,631 |
| 20 to 24 years | 2,046 |
| 25 to 34 years | 2,959 |
| 35 to 44 years | 3,309 |
| 45 to 54 years | 2,382 |
| 55 to 59 years | 1,300 |
| 60 to 64 years | 1,178 |
| 65 to 74 years | 1,902 |
| 75 to 84 years | 897 |
| 85 years and over | 393 |
| Median age (years) | 34.5 |
| Under 18 years | 6,096 |
| 16 years and over | 17,658 |
| 18 years and over | 16,942 |
| 21 years and over | 15,957 |
| 62 years and over | 3,763 |
| 65 years and over | 3,192 |
| Total population | 23,038 |
| One race | 21,055 |
| White | 17,996 |
| Black or African American | 1,252 |
| American Indian and Alaska Native | 300 |
| Asian | 1,066 |
| Native Hawaiian and Other Pacific Islander | 55 |
| Some other race | 386 |
| Two or more races | 1,983 |
| Citizen, VOTING AGE 18 and over population | 15,859 |
| Male Citizen, VOTING AGE 18 and over population | 7,871 |
| Female Citizen, VOTING AGE 18 and over population | 7,988 |
Social characteristics in ZIP Code 51104
| Total households | 8,418 |
| Family households (families) | 3,871 |
| Married-couple family | 884 |
| Male householder, no wife present, family | 1,560 |
| Female householder, no husband present, family | 1,085 |
| Nonfamily households | 2,103 |
| Average household size | 2,039 |
| Average family size | 2.65 |
Economic characteristics in ZIP Code 51104
| Total households | 8,418 |
| Less than $10,000 | 590 |
| $10,000 to $14,999 | 228 |
| $15,000 to $24,999 | 555 |
| $25,000 to $34,999 | 737 |
| $35,000 to $49,999 | 959 |
| $50,000 to $74,999 | 1,559 |
| $75,000 to $99,999 | 1,008 |
| $100,000 to $149,999 | 1,656 |
| $150,000 to $199,999 | 746 |
| $200,000 or more | 380 |
| Median household income (dollars) | 64,735 |
Housing characteristics in ZIP Code 51104
| Total housing units | 9,006 |
| Occupied housing units | 8,418 |
| Vacant housing units | 588 |
| Total housing units | 9,006 |
| 1-unit, detached | 6,399 |
| 1-unit, attached | 257 |
| 2 units | 296 |
| 3 or 4 units | 214 |
| 5 to 9 units | 352 |
| 10 to 19 units | 381 |
| 20 or more units | 1,055 |
| Mobile home | 34 |
| Boat, RV, van, etc. | 18 |
| Total housing units | 9,006 |
| Built 2014 or later | 30 |
| Built 2010 to 2013 | 154 |
| Built 2000 to 2009 | 255 |
| Built 1990 to 1999 | 848 |
| Built 1980 to 1989 | 660 |
| Built 1970 to 1979 | 1,287 |
| Built 1960 to 1969 | 1,103 |
| Built 1950 to 1959 | 1,616 |
| Built 1940 to 1949 | 786 |
| Built 1939 or earlier | 2,267 |
| Total housing units | 9,006 |
| 1 room | 120 |
| 2 rooms | 212 |
| 3 rooms | 782 |
| 4 rooms | 1,609 |
| 5 rooms | 1,245 |
| 6 rooms | 1,352 |
| 7 rooms | 1,301 |
| 8 rooms | 757 |
| 9 rooms or more | 1,628 |
| Median rooms | 5.9 |
| Total housing units | 9,006 |
| No bedroom | 127 |
| 1 bedroom | 1,341 |
| 2 bedrooms | 2,487 |
| 3 bedrooms | 3,068 |
| 4 bedrooms | 1,738 |
| 5 or more bedrooms | 245 |
| Occupied housing units | 8,418 |
| Owner-occupied | 5,510 |
| Renter-occupied | 2,908 |
| Average household size of owner-occupied unit | 2.85 |
| Average household size of renter-occupied unit | 2.29 |
| Occupied housing units | 8,418 |
| Moved in 2017 or later | 875 |
| Moved in 2015 to 2016 | 2,709 |
| Moved in 2010 to 2014 | 1,400 |
| Moved in 2000 to 2009 | 1,792 |
| Moved in 1990 to 1999 | 858 |
| Moved in 1989 and earlier | 784 |
| Owner-occupied units | 5,510 |
| Less than $50,000 | 156 |
| $50,000 to $99,999 | 712 |
| $100,000 to $149,999 | 1,560 |
| $150,000 to $199,999 | 1,416 |
| $200,000 to $299,999 | 1,253 |
| $300,000 to $499,999 | 363 |
| $500,000 to $999,999 | 50 |
| $1,000,000 or more | 0 |
| Median (dollars) | 160,700 |
| Owner-occupied units | 5,510 |
| Housing units with a mortgage | 3,704 |
| Housing units without a mortgage | 1,806 |
| Occupied units paying rent | 2,749 |
| Less than $500 | 149 |
| $500 to $999 | 1,832 |
| $1,000 to $1,499 | 660 |
| $1,500 to $1,999 | 53 |
| $2,000 to $2,499 | 26 |
| $2,500 to $2,999 | 0 |
| $3,000 or more | 29 |
| Median (dollars) | 865 |
| No rent paid | 159 |
Data is based on 2021 Census