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ZIP Code 51101
Sioux City, IA, Woodbury County
Population
1,031
Land area
1.2sq mi
People per sq mi
857
City
Sioux City
ZIP 51101 and nearby ZIP codes
ZIP 51101 at a glance
- ZIP 51101 (Sioux City) is about 15 times as dense as Iowa as a whole.
- The median household income is $15,300, 80% below the Iowa median of $75,059.
- Median rent is $708 a month.
Local data for ZIP 51101
Counts from official public data
Housing and community stats
ZIP 51101, American Community Survey 2020-2024
Median household income
$15,300
Poverty rate
48.1%
Median rent
$708/mo
Homeownership
3.4%
Bachelor's or higher
10.9%
Median age
40.8
Average commute
10.8 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
413
ZIP Business Patterns 2023
Employees
9,223
$534M annual payroll
PPP loans
$63.09M
410 loans
Campaign donations
$12.03K
11% D, 83% R, 2026 cycle
Environment and hazard risk
ZIP 51101, 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 51101, CDC PLACES estimates
Obesity
47.0%
U.S. 33.3% +13.7 pts
Diabetes
16.1%
U.S. 12.1% +4.0 pts
Smoking
26.6%
U.S. 12.8% +13.8 pts
Uninsured (18-64)
16.6%
U.S. 11.1% +5.5 pts
Cities in ZIP 51101
ZIP codes near 51101
| Name | Distance | Land area (sq mi) |
|---|---|---|
| 51105Sioux City | 1.8 mi | 6 |
| 51104Sioux City | 2.9 mi | 7.5 |
| 51103Sioux City | 3.4 mi | 12.1 |
| 51106Sioux City | 3.9 mi | 33.5 |
| 68776South Sioux City | 4 mi | 22.2 |
| 51111Sioux City | 5.2 mi | 6.1 |
| 51108Hinton | 5.3 mi | 46 |
| 51109Sioux City | 6.4 mi | 17.6 |
| 57049North Sioux City | 6.6 mi | 14.2 |
| 68731Dakota City | 7 mi | 36.4 |
| 51054Sergeant Bluff | 8.2 mi | 38.7 |
| 51030Lawton | 10 mi | 58.9 |
Frequently asked questions
- What city is ZIP code 51101?
- ZIP code 51101 is in Sioux City, IA (Woodbury County).
- What county is ZIP code 51101 in?
- ZIP code 51101 is mostly in Woodbury County, Iowa.
- How many people live in ZIP code 51101?
- About 1,031 people live in the 51101 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.