Zip code 51103: Sioux City, Iowa

Q: What city is zip code 51103?

51103 is assigned to Sioux City, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 51103 in?

51103 is in Woodbury County, Iowa.

Q: What is the population of 51103?

About 16,895 people live in 51103, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 51103?

The median household income in 51103 is $58,197.

Q: What zip codes are near 51103?

The closest zip codes to 51103 are 51104, 57049, 51101, 68776, 51105.

Residential delivery areaWoodbury CountyCentral Time

Population

16,895

Median household income

$58K

U.S. $81K

Median home value

$143K

U.S. $333K

Median rent

$906/mo

U.S. $1,413

Median age

35.5

U.S. 38.9

Land area

12 sq mi

1,400 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 51103

51103 is a suburban zip code in Sioux City, Iowa (Woodbury County), covering 12 sq mi of land. About 16,895 people live here, or 1,400 per square mile. The median resident is 35.5 years old, compared with 38.9 nationally.

The median household earns $58,197 a year, 28% below the national median of $80,734. 21% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $142,900, or 2.5 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 66% of occupied homes are lived in by their owners, and renters pay a median of $906 a month.

18% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 21.1 minutes each way, and 6% of workers work from home. The most common jobs among working residents are in transportation and moving goods; production and manufacturing; and food service. 32% of households speak a language other than English at home, most often Spanish.

How 51103 compares

Sorted from highest to lowest national percentile

Poverty rate21%
86th
WeaknessU.S. 12.5% · IA 11.1%60th of 909 in IA
Residents under 1825.9%
81st
U.S. 22% · IA 22.9%267th of 911 in IA
Uninsured rate11.4%
78th
U.S. 8.4% · IA 5%70th of 911 in IA
Diversity index61.1
74th
U.S. 61.4 · IA 31.49th of 911 in IA
Foreign-born residents17.9%
71st
U.S. 14.1% · IA 5.9%17th of 911 in IA
Income inequality (Gini)0.438
52nd
U.S. 0.483 · IA 0.444228th of 908 in IA
Population density1,400/sq mi
50th
U.S. 95/sq mi · IA 58/sq mi45th of 911 in IA
Housing vacancy6.5%
49th
U.S. 10.1% · IA 8.5%600th of 909 in IA
Residents 65 and older16.2%
47th
U.S. 17.2% · IA 18.1%693rd of 911 in IA
Self-employed workers8.9%
45th
U.S. 10% · IA 10.2%684th of 911 in IA
Homeownership rate65.6%
43rd
U.S. 65.2% · IA 71.7%844th of 909 in IA
Healthcare workers8.9%
41st
U.S. 9.7% · IA 9.2%417th of 911 in IA
Veterans5.1%
40th
U.S. 6.2% · IA 6.5%677th of 911 in IA
Population16,895
26th
U.S. 334,922,499 · IA 3,210,50751st of 911 in IA
Rent-burdened renters44%
26th
U.S. 51.1% · IA 43.9%272nd of 882 in IA
Median age35.5
24th
U.S. 38.9 · IA 38.6792nd of 911 in IA
Unemployment rate3.4%
23rd
U.S. 5.2% · IA 3.6%295th of 911 in IA
Median household income$58,197
18th
WeaknessU.S. $80,734 · IA $75,059779th of 896 in IA
Average commute21.1 min
18th
StrengthU.S. 26.4 min · IA 19.8 min574th of 902 in IA
Bachelor's degree or higher18%
16th
WeaknessU.S. 35.7% · IA 31.4%592nd of 911 in IA
Median gross rent$906
14th
U.S. $1,413 · IA $972257th of 771 in IA
Broadband access85.7%
14th
WeaknessU.S. 91% · IA 88.9%626th of 909 in IA
Median earnings per worker$37,110
14th
WeaknessU.S. $49,666 · IA $47,712836th of 910 in IA
Per capita income$27,717
13th
WeaknessU.S. $44,673 · IA $40,877848th of 911 in IA
Tech workers0.9%
11th
U.S. 3.8% · IA 2.9%442nd of 911 in IA
Work from home5.5%
9th
U.S. 15.1% · IA 11.3%664th of 911 in IA
Median home value$142,900
8th
U.S. $332,700 · IA $208,000567th of 881 in IA
Government workers8.2%
8th
U.S. 14.5% · IA 14.5%755th of 911 in IA

Measure	51103	Woodbury	IA	U.S.	National percentile	Rank in IA
Poverty rateWeakness	21%	14%	11.1%	12.5%	86th	60th of 909
Residents under 18	25.9%	25.8%	22.9%	22%	81st	267th of 911
Uninsured rate	11.4%	7.3%	5%	8.4%	78th	70th of 911
Diversity index	61.1	50.8	31.4	61.4	74th	9th of 911
Foreign-born residents	17.9%	10.6%	5.9%	14.1%	71st	17th of 911
Income inequality (Gini)	0.438	0.436	0.444	0.483	52nd	228th of 908
Population density	1,400/sq mi	122/sq mi	58/sq mi	95/sq mi	50th	45th of 911
Housing vacancy	6.5%	6.2%	8.5%	10.1%	49th	600th of 909
Residents 65 and older	16.2%	15.9%	18.1%	17.2%	47th	693rd of 911
Self-employed workers	8.9%	8.5%	10.2%	10%	45th	684th of 911
Homeownership rate	65.6%	68.2%	71.7%	65.2%	43rd	844th of 909
Healthcare workers	8.9%	8.8%	9.2%	9.7%	41st	417th of 911
Veterans	5.1%	5.7%	6.5%	6.2%	40th	677th of 911
Population	16,895	106,247	3,210,507	334,922,499	26th	51st of 911
Rent-burdened renters	44%	42.5%	43.9%	51.1%	26th	272nd of 882
Median age	35.5	36.1	38.6	38.9	24th	792nd of 911
Unemployment rate	3.4%	4.1%	3.6%	5.2%	23rd	295th of 911
Median household incomeWeakness	$58,197	$73,658	$75,059	$80,734	18th	779th of 896
Average commuteStrength	21.1 min	18.1 min	19.8 min	26.4 min	18th	574th of 902
Bachelor's degree or higherWeakness	18%	24.3%	31.4%	35.7%	16th	592nd of 911
Median gross rent	$906	$981	$972	$1,413	14th	257th of 771
Broadband accessWeakness	85.7%	87.3%	88.9%	91%	14th	626th of 909
Median earnings per workerWeakness	$37,110	$44,867	$47,712	$49,666	14th	836th of 910
Per capita incomeWeakness	$27,717	$35,564	$40,877	$44,673	13th	848th of 911
Tech workers	0.9%	1.1%	2.9%	3.8%	11th	442nd of 911
Work from home	5.5%	5.6%	11.3%	15.1%	9th	664th of 911
Median home value	$142,900	$183,200	$208,000	$332,700	8th	567th of 881
Government workers	8.2%	11.6%	14.5%	14.5%	8th	755th of 911

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

21%

5–17

12%

18–24

12%

25–34

11%

35–44

11%

45–54

12%

55–64

11%

65–74

75+

Median age

35.5

Under 18

25.9%

65 and over

16.2%

Race and ethnicity

White50%
Black5%
Hispanic37%
Asian3%
Native American1%
Pacific Islander0%
Other0.7%
Multiracial4%

Diversity index

61.1

U.S. 61.4

Foreign-born

17.9%

U.S. 14.1%

Born in state

52.3%

Language spoken at home (households)

English only

68%

Spanish

26%

Other Indo-European

Asian / Pacific

Other

Households

Households: 6,402
Average household size: 2.6
Family households: 62.4%
Married couples: 34.5%
Living alone: 30.2%
Veterans (of adults): 5.1%
Male / female: 49% / 51%

Income and poverty

Household income distribution

<$25k

23%

$25–50k

18%

$50–75k

20%

$75–100k

13%

$100–150k

21%

$150–200k

$200k+

Median household income

51103

$58,197

Woodbury Co.

$73,658

Iowa

$75,059

United States

$80,734

Per capita income

$27,717

U.S. $44,673

Poverty rate

21%

U.S. 12.5%

Households earning $150K+

4.6%

U.S. 23%

Income inequality (Gini)

0.438

U.S. 0.483

Housing

Median home value

51103

$142,900

Woodbury Co.

$183,200

Iowa

$208,000

United States

$332,700

Median gross rent

51103

$906

Woodbury Co.

$981

Iowa

$972

United States

$1,413

Types of housing

Single-family

78%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 6,848
Owner-occupied: 65.6%
Vacant: 6.5%
Median year built: 1950
Median rooms: 5.7
Renters paying 30%+ of income: 44%
Renters paying 50%+ of income: 30.3%
Home value to income: 2.5× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

77%

Carpooled

11%

Transit

Walked

Bicycle

0.6%

Worked from home

Other

0.7%

Commute time (one way)

<10 min

19%

10–19

52%

20–29

16%

30–44

45–59

60+

Average commute

21.1 min

U.S. 26.4 min

Unemployment

3.4%

U.S. 5.2%

In labor force

64.6%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Transportation and moving

16%

Production

15%

Food service

11%

Construction and repair

11%

Healthcare

Office and admin

Sales

Management

Cleaning and personal care

Education

Business and finance

Legal and social services

Farming, fishing and forestry

Engineering and science

0.9%

Computer and math

0.9%

Arts, media and sports

0.3%

Police and fire

0.2%

Industries

Manufacturing

23%

Health care and social assistance

15%

Restaurants and hotels

11%

Retail

10%

Construction

Transportation, warehousing and utilities

Admin, support and management

Finance, insurance and real estate

Education

Other services

Wholesale

Professional and technical services

Arts and recreation

Public administration

Agriculture and mining

Information

Median earnings per worker

$37,110

U.S. $49,666

Self-employed

8.9%

U.S. 10%

Government workers

8.2%

U.S. 14.5%

Nonprofit workers

5.4%

U.S. 8.8%

Median earnings by type of work

Type of work	51103	U.S.
Management, business, science and arts	$46,525	$74,888
Service	$16,727	$26,804
Sales and office	$34,201	$40,476
Construction and maintenance	$45,144	$49,199
Production and transportation	$45,167	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

22%

High school

36%

Some college

17%

Associate's

Bachelor's

14%

Graduate

High school graduate or higher: 78.4%
Bachelor's degree or higher: 18%
Graduate or professional degree: 3.8%
Households with broadband: 85.7%
Cable, fiber or DSL: 69%
No internet access: 12.2%
Without health insurance: 11.4%
Limited-English households: 7.4%

Geography

City (USPS): Sioux City
State: Iowa
County: Woodbury County
Center point: 42.5197° N, 96.4493° W
Land area: 12 sq mi
Water area: 0.2 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Sioux City100% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 51103

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
51104	Sioux City, IA	2.6 mi	23,197	$75,362	$211,100
57049	North Sioux City, SD	3.1 mi	7,962	$93,134	$432,100
51101	Sioux City, IA	3.3 mi	1,031	$15,300	—
68776	South Sioux City, NE	4.2 mi	15,373	$68,750	$179,800
51105	Sioux City, IA	4.3 mi	10,415	$51,786	$96,200
51108	Sioux City, IA	5.9 mi	5,960	$81,205	$169,700
51109	Sioux City, IA	6.3 mi	3,606	$79,034	$130,900
51111	Sioux City, IA	7.6 mi	39	—	—
57038	Jefferson, SD	7.6 mi	1,796	$106,250	$332,300
51106	Sioux City, IA	8 mi	28,592	$78,434	$200,200
68731	Dakota City, NE	8 mi	3,469	$79,924	$205,600
68743	Jackson, NE	9.5 mi	814	$71,667	$208,200

Zip codes like 51103 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 51103

What city is zip code 51103?

51103 is assigned to Sioux City, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 51103 in?

51103 is in Woodbury County, Iowa.

What is the population of 51103?

About 16,895 people live in 51103, according to the Census Bureau's American Community Survey.

What time zone is 51103 in?

51103 is in Central Time.

What is the median household income in 51103?

The median household income in 51103 is $58,197.

What zip codes are near 51103?

The closest zip codes to 51103 are 51104, 57049, 51101, 68776, 51105.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 51103, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.