Sioux City ZIP Codes — Woodbury County, IA

There are 9 unique ZIP codes in Sioux City, Iowa. Area code: 712.

ZIP codes

129.86

sq mi land

1.85

sq mi water

712

area code

Sioux City, IA ZIP code map

About Sioux City, IA

Sioux City, Iowa, is a vibrant city situated in the northwestern part of the state, offering a blend of rich history and modern living. Known for its diverse culture and strong community ties, Sioux City serves as a hub for trade and commerce in Woodbury County. With a variety of attractions and events, the city is both a welcoming place for newcomers and a rich historical factor for long-time residents.

Location & geography

Sioux City is located in Woodbury County and is bordered by the Missouri River to the west, making it a picturesque location. Nearby cities include South Sioux City, Nebraska, about 2 miles away, and Sioux Falls, South Dakota, which is roughly 90 miles to the north. The city covers a land area of 129.86 square miles, with an additional water area of 1.85 square miles, contributing to its scenic beauty and recreational opportunities.

Community & economy

The character of Sioux City reflects a strong sense of community with friendly residents and a focus on local culture. Key industries in the area include manufacturing, healthcare, and education, providing ample job opportunities for citizens. Daily life is enriched by various local events, festivals, and outdoor activities, making it a lively place to live and work.

Transportation

Sioux City is accessible via major highways including Interstate 29 and U.S. Highway 20, facilitating travel to surrounding regions. The nearest airport is Sioux Gateway Airport, located just a few miles from downtown, providing connections to larger cities. Public transit options, such as buses, help residents navigate the city efficiently.

History

Sioux City was founded in the mid-19th century and quickly became a crucial trading post for pioneer settlers. The city has historically thrived in industries such as meatpacking and agriculture, which have played significant roles in its development. Notable events include its celebration as a key rail hub in the early 1900s, which spurred growth and connectivity.

Did you know?

One surprising fact about Sioux City is that it is home to the Sioux City Art Center, which showcases regional artists and has a collection that reflects the local culture. Additionally, the city hosts the annual Sioux City Music Festival, drawing musicians and visitors from across the region.

ZIP codes for Sioux City, IA (9)

ZIP code	City	County	Map
51101	Sioux City	Woodbury	View map
51102	Sioux City	Woodbury	View map
51103	Sioux City	Woodbury	View map
51104	Sioux City	Woodbury	View map
51105	Sioux City	Woodbury	View map
51106	Sioux City	Woodbury	View map
51108	Sioux City	Woodbury	View map
51109	Sioux City	Woodbury	View map
51111	Sioux City	Woodbury	View map

Demographics & statistics

88,998

Population

35.7

Median age

$66,513

Median household income

$32,092

Per capita income

$132,338

Median home value

$893

Median monthly rent

53.1%

Home ownership

14.5%

Poverty rate

4.1%

Unemployment

24,302

Housing units

16.6%

Bachelor's or higher

Age distribution

Male Female

3,038

Under 5

3,039

3,227

5–9

3,227

3,143

10–14

3,144

3,512

15–19

3,512

3,445

20–24

3,445

5,670

25–34

5,672

5,431

35–44

5,432

5,292

45–54

5,293

2,628

55–59

2,628

2,555

60–64

2,555

3,911

65–74

3,911

1,953

75–84

1,954

690

85+

691

← Male

Female →

Age summary

Group	Count	%
Under 18	22,848	27.3%
18 and over	66,150	72.7%
65 and over	13,110	13.8%
Median age	35.7 years

Race & ethnicity

White 65.6%

Two or more races 11%

Hispanic or Latino 10.9%

Black or African American 4.5%

Other race 3.4%

Asian 2.3%

American Indian / Alaska Native 1.8%

Native Hawaiian / Pacific Islander 0.6%

Group	Count	%
White	65,526	65.6%
Two or more races	11,014	11%
Hispanic or Latino	10,842	10.9%
Black or African American	4,459	4.5%
Other race	3,372	3.4%
Asian	2,259	2.3%
American Indian / Alaska Native	1,779	1.8%
Native Hawaiian / Pacific Islander	589	0.6%

Household income

Under $10k 5.5%

$10k–$15k 5.8%

$15k–$25k 8.8%

$25k–$35k 8.2%

$35k–$50k 22.0%

$50k–$75k 15.2%

$75k–$100k 10.9%

$100k–$150k 14.9%

$150k–$200k 4.4%

$200k+ 4.3%

Range	% of households
Under $10k	5.5%
$10k–$15k	5.8%
$15k–$25k	8.8%
$25k–$35k	8.2%
$35k–$50k	22.0%
$50k–$75k	15.2%
$75k–$100k	10.9%
$100k–$150k	14.9%
$150k–$200k	4.4%
$200k+	4.3%
Median income	$66,513

Housing

Home values

Under $50k 5.0%

$50k–$100k 17.1%

$100k–$150k 21.0%

$150k–$200k 17.5%

$200k–$300k 19.9%

$300k–$500k 4.7%

$500k–$1M 1.8%

$1M+ 0.5%

Housing overview

Metric	Value
Median home value	$132,338
Median rent / month	$893
Owner occupied	53.1%
Renter occupied	46.9%
Vacant	6.2%
Single-family detached	56.3%
Large apartment buildings	12.4%
Mobile homes	3.2%
Median rooms	5.3
Avg household size (owned)	2.19

Year built

Era	%
2020 or later	0.5%
2010–2019	2.4%
2000–2009	4.7%
1990–1999	6.9%
1980–1989	3.7%
1970–1979	10.1%
1960–1969	17.5%
1950–1959	14.2%
1940–1949	9.4%
1939 or earlier	30.6%

Bedrooms

Size	% of units
No bedroom (studio)	3.9%
1 bedroom	15.1%
2 bedrooms	24.4%
3 bedrooms	42.5%
4 bedrooms	10.0%
5+ bedrooms	4.1%

Vehicles per household

Vehicles	% of households
No vehicle	9.4%
1 vehicle	34.3%
2 vehicles	37.4%
3 or more	18.9%

Heating fuel

Fuel type	%
Utility gas	55.8%
Electricity	38.4%
Propane / LP gas	3.9%
Fuel oil	0.1%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	14,673	36.2%
Cohabiting couple	3,066	7.8%
Male householder, no spouse	6,655	24.9%
Female householder, no spouse	9,482	31.1%
Households with children under 18	11,256	34.2%
Households with seniors (65+)	9,799	25.6%
Average household size	2.43

Marital status

Status	Male	Female
Never married	35.9%	41.8%
Married	41.7%	38.2%
Separated	1.6%	2.0%
Widowed	9.6%	6.9%
Divorced	11.2%	11.2%

Education

Less than 9th grade 5.9%

Some HS, no diploma 7.3%

HS graduate 35.0%

Some college, no degree 25.4%

Associate's degree 9.8%

Bachelor's degree 11.5%

Graduate / professional 5.1%

Metric	%
HS diploma or higher	86.8%
Bachelor's or higher	16.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	1,445	5.7%
Kindergarten	1,244	16.1%
Elementary school	10,045	35.3%
High school	5,361	22.7%
College / grad school	5,618	20.4%

Employment

Industry of employment

Education & healthcare 24.8%

Manufacturing 16.2%

Arts, food & hospitality 15.5%

Retail trade 8.8%

Construction 8.6%

Professional & management 6.2%

Other services 5.5%

Finance & real estate 5.5%

Transportation & utilities 3.2%

Public administration 2.2%

Wholesale trade 1.7%

Information 1.1%

Agriculture & mining 1.0%

Occupation

Category	%
Management, business & arts	31.6%
Service	19.6%
Sales & office	17.9%
Natural resources & construction	12.0%
Production & transportation	18.9%

Employment type

Type	%
Private sector	89.3%
Government	7.7%
Self-employed	2.9%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	84.6%
Carpool	8.4%
Public transit	0.7%
Walk	2.9%
Other means	0.6%
Avg commute (minutes)	14.3

Poverty

All people 14.5%

Under 18 years 21.7%

18 and over 12.8%

Married-couple families 3.4%

Female-led households 23.9%

Income support

Source	% of households
Social Security	28.2%
Retirement income	17.1%
Supplemental Security	6.1%
Cash public assistance	2.5%
Food stamps / SNAP	12.0%

Health indicators

Condition	%
High blood pressure	32.9%
High cholesterol	32.6%
Heart disease	6.5%
Stroke	3.3%
Asthma	9.7%
Arthritis	23.6%
Kidney disease	3.0%
Pulmonary disease	7.6%
Cancer	6.0%

Behavior / access	%
Binge drinking	20.7%
No physical activity	30.5%
Less than 7 hrs sleep	33.9%
Fair or poor health	16.3%
Poor mental health	15.1%
Poor physical health	11.2%
No health insurance	14.0%
Visited doctor (checkup)	75.8%
Visited dentist	62.0%
Cholesterol screening	85.2%
Teeth loss	17.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	4,103	6.8%

Disability	%
Any disability	23.1%
Under 18	15.9%
18–64 years	15.6%
65 and over	35.3%

Health insurance coverage

Type	%
Private insurance	56.1%
Public insurance	49.0%
Uninsured under 19	2.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	82,921	94.8%
Spanish	7,908	7.7%
Other Indo-European	5,463	5.4%
Asian & Pacific Islander	467	0.3%
Other languages	1,423	1.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	79,305	90.7%
Born in same state	78,397	90.0%
Born in different state	56,406	65.0%
Foreign born	908	0.7%
Naturalized citizen	9,693	9.3%
Not a US citizen	4,229	35.1%

Ancestry

Ancestry	Count	%
Italian	10,117	11.4%
French	5,973	6.7%
Arab	4,417	5%
Polish	3,394	3.8%
English	2,587	2.9%

Ancestry	Count	%
Dutch	1,280	1.4%
German	382	0.4%
Norwegian	58	0.1%
Irish	36	0%

Technology access

Metric	% of households
Computer access	40.0%
Internet access	92.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Sioux City, IA have?

Sioux City, IA has 8 ZIP codes: 51101, 51103, 51104, 51105, 51106, 51108, 51109, and 51111. Each ZIP code serves a distinct delivery area within the city and surrounding region.