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ZIP Code 51111
Sioux City, IA, Woodbury County
Population
39
Land area
6.1sq mi
People per sq mi
6
City
Sioux City
ZIP 51111 and nearby ZIP codes
ZIP 51111 at a glance
- ZIP 51111 (Sioux City) is 89% less dense than Iowa as a whole.
Local data for ZIP 51111
Counts from official public data
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
96
ZIP Business Patterns 2023
Employees
6,303
$362M annual payroll
PPP loans
$14.1M
42 loans
Campaign donations
$13.6K
0% D, 15% R, 2026 cycle
Environment and hazard risk
ZIP 51111, 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 51111, CDC PLACES estimates
Obesity
41.1%
U.S. 33.3% +7.8 pts
Diabetes
14.7%
U.S. 12.1% +2.6 pts
Smoking
21.1%
U.S. 12.8% +8.3 pts
Uninsured (18-64)
16.0%
U.S. 11.1% +4.9 pts
Frequently asked questions
- What city is ZIP code 51111?
- ZIP code 51111 is in Sioux City, IA (Woodbury County).
- What county is ZIP code 51111 in?
- ZIP code 51111 is mostly in Woodbury County, Iowa.
- How many people live in ZIP code 51111?
- About 39 people live in the 51111 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.