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ZIP Code 51103
Sioux City, IA, Woodbury County
Population
16,895
Land area
12.1sq mi
People per sq mi
1,400
City
Sioux City
ZIP 51103 and nearby ZIP codes
ZIP 51103 at a glance
- ZIP 51103 (Sioux City) is about 24 times as dense as Iowa as a whole.
- The median household income is $58,197, 22% below the Iowa median of $75,059.
- A typical owner-occupied home is valued at $142,900 (31% below Iowa) and median rent is $906 a month.
Local data for ZIP 51103
Counts from official public data
Housing and community stats
ZIP 51103, American Community Survey 2020-2024
Median household income
$58,197
Poverty rate
21.0%
Median home value
$142,900
Prices +6.4% in a year
Median rent
$906/mo
Homeownership
65.6%
Bachelor's or higher
18.0%
Median age
35.5
Average commute
21.1 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
265
ZIP Business Patterns 2023
Employees
3,791
$143M annual payroll
PPP loans
$28.4M
325 loans
Campaign donations
$15.3K
40% D, 38% R, 2026 cycle
Environment and hazard risk
ZIP 51103, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: tornado
Storm events since 1996
1,052
Countywide, mostly hail
Flood insurance policies
173
0.5% of homes, county
July high / Jan low
86° / 9°F
30.3 inches of rain a year
Health statistics
Share of adults in ZIP 51103, CDC PLACES estimates
Obesity
42.1%
U.S. 33.3% +8.8 pts
Diabetes
14.5%
U.S. 12.1% +2.4 pts
Smoking
19.9%
U.S. 12.8% +7.1 pts
Uninsured (18-64)
16.0%
U.S. 11.1% +4.9 pts
Frequently asked questions
- What city is ZIP code 51103?
- ZIP code 51103 is in Sioux City, IA (Woodbury County).
- What county is ZIP code 51103 in?
- ZIP code 51103 is mostly in Woodbury County, Iowa.
- How many people live in ZIP code 51103?
- About 16,895 people live in the 51103 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.