ZIP Code 51104 Map
Census ZIP Code Tabulation Area 51104 in Sioux City, IA (Woodbury County). ZCTA boundaries closely approximate USPS delivery areas.
Loading map…
ZIP 51104 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
23,197
Households
8,729
Median household income
$75,362
Median age
37.5 years
Median home value
$211,100
Median gross rent
$998/mo
Owner-occupied homes
64.5%
Bachelor's degree or higher
28.9%
Below poverty level
10.4%
Land area
7.5 sq mi
Population density
3,103 / sq mi