US ZIP Code
51111

Sioux City, IA

Woodbury County  ·  Iowa

● Active
👥 48 Population ↓ 61% since 2019
💰 $45,250 Median HH Income
▼ 41% below avg ↑ 15% since 2019
🎂 26.8 Median Age ↑ 294% since 2019
🎓 0.0% College Grads
▼ 100% below avg
📊 0.0% Unemployment
▼ 100% below avg
ZIP Code Details
ZIP Code51111
CitySioux City
StateIowa (IA)
CountyWoodbury County
Area Code712
Elevation1,088 ft
Latitude42.4185
Longitude-96.393103
TimezoneChicago (DST)
FIPS19193
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 58.3% (28) Female 41.7% (20) ♀

Race & Ethnicity

White: 100%Race
White100.0%

Age Breakdown

18–24
29%
25–44
25%
45–64
21%

Key Indicators

Median Age26.8 yrs ↑ 294% since 2019
Avg Household Size1.60
Below Poverty0.0% ▼ 100% below avg
College Grads0.0% ▼ 100% below avg
Unemployment0.0% ▼ 100% below avg
HS Graduate22 (64.7%)
Some College12 (35.3%)

Education

HS Grad: 64.7%Some College: 35.3%Edu
HS Grad64.7%
Some College35.3%
Housing & Income

Housing Tenure

Renter: 100%Tenure
Renter100.0%

Financials

Median HH Income$45,250 ▼ 41% below avg ↑ 15% since 2019
Median Rent$1,016/mo ↑ 20% since 2019
Total Units30
Avg HH Size1.60

Income Distribution

$25k–50k
80%
$50k–75k
20%
Employment & Commute

How People Get to Work

Drove Alone
100%

Commute Time

Under 15 min
88%
15–30 min
13%
Frequently Asked Questions
ZIP code 51111 is in Sioux City, IA, in Woodbury County.
ZIP code 51111 is located in Iowa (IA).
ZIP code 51111 is in Woodbury County, IA.
ZIP 51111 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 51111 is 48 people (ACS 2023).
The median household income in ZIP code 51111 is $45,250 (ACS 2023).
Home value data not available.
About ZIP Code 51111

ZIP code 51111 is located in Sioux City, Iowa, within Woodbury County. With a population of 48, this is a sparsely populated ZIP code with a young community — the median age is 26.8 years. Economically, 51111 is a working-class ZIP code: the median household income of $45,250 is below the national average.

Renters can expect to pay around $1,016 per month in median rent.

The population of 51111 is primarily White (100.00%). Household income has grown by 15% since 2019.

Overall, ZIP code 51111 in Sioux City, IA is characterized as working-class, and a young community.