ZIP code 51111: Sioux City, IA
51111 is a ZIP code in Sioux City, Iowa, mainly in Woodbury County, part of the Sioux City, IA-NE-SD metro area. About 39 people live here.
- Population
- 39
- Median household income
- —
- Typical home value
- —
- Median rent
- —gross, per month
- Median age
- 26.4
- Homeowners
- 0%of occupied homes
Shaded: ZIP code 51111's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 51111 details
| City | Sioux City |
|---|---|
| State | Iowa |
| County | Woodbury County |
| Metro area | Sioux City, IA-NE-SD |
| Time zone | Central Time (UTC−6), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 6.1 sq mi, plus 0.2 sq mi of water |
| Population density | 6 people per sq mi |
| Bachelor's degree or higher | 0% of adults 25+ |
| Center coordinates | 42.41850, -96.39310 |
ZIP codes near 51111
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 68776 | South Sioux City, NE | 3.8 mi | 15,373 |
| 51054 | Sergeant Bluff, IA | 3.9 mi | 5,583 |
| 68731 | Dakota City, NE | 5.1 mi | 3,469 |
| 51106 | Sioux City, IA | 5.1 mi | 28,592 |
| 51102 | Sioux City, IA | 5.2 mi | — |
| 51101 | Sioux City, IA | 5.2 mi | 1,031 |
| 51105 | Sioux City, IA | 6.3 mi | 10,415 |
| 51103 | Sioux City, IA | 7.6 mi | 16,895 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
About ZIP code 51111
What city is ZIP code 51111?
ZIP code 51111 is in Sioux City, IA, in Woodbury County.
What county is ZIP code 51111 in?
51111 is mainly in Woodbury County, Iowa.
What is the population of ZIP code 51111?
About 39 people live in ZIP code 51111, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 51111 in?
51111 is in Central Time (UTC−6). It observes daylight saving time.