Zip code 51040: Onawa, Iowa

Q: What city is zip code 51040?

51040 is assigned to Onawa, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 51040 in?

51040 is in Monona County, Iowa.

Q: What is the population of 51040?

About 3,500 people live in 51040, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 51040?

The median household income in 51040 is $71,179.

Q: What zip codes are near 51040?

The closest zip codes to 51040 are 51523, 51010, 51063, 68020, 51558.

Residential delivery areaMonona CountyCentral Time

Population

3,500

Median household income

$71K

U.S. $81K

Median home value

$152K

U.S. $333K

Median rent

$947/mo

U.S. $1,413

Median age

37.6

U.S. 38.9

Land area

130 sq mi

27 people/sq mi

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

About 51040

51040 is a rural zip code in Onawa, Iowa (Monona County), covering 130 sq mi of land. About 3,500 people live here, or 27 per square mile. The median resident is 37.6 years old, compared with 38.9 nationally.

The median household earns $71,179 a year, close to the national median of $80,734. 14.2% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $151,600, or 2.1 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 75% of occupied homes are lived in by their owners, and renters pay a median of $947 a month.

20% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 18.3 minutes each way, and 6% of workers work from home. The most common jobs among working residents are in construction and repair; management; and healthcare.

How 51040 compares

Sorted from highest to lowest national percentile

Self-employed workers14.8%
90th
U.S. 10% · IA 10.2%387th of 911 in IA
Healthcare workers12.9%
88th
U.S. 9.7% · IA 9.2%154th of 911 in IA
Residents 65 and older22.1%
84th
U.S. 17.2% · IA 18.1%343rd of 911 in IA
Veterans8.8%
83rd
U.S. 6.2% · IA 6.5%244th of 911 in IA
Housing vacancy10.2%
72nd
U.S. 10.1% · IA 8.5%378th of 909 in IA
Homeownership rate75.3%
67th
U.S. 65.2% · IA 71.7%678th of 909 in IA
Poverty rate14.2%
66th
U.S. 12.5% · IA 11.1%182nd of 909 in IA
Residents under 1823.8%
65th
U.S. 22% · IA 22.9%408th of 911 in IA
Government workers15.9%
65th
U.S. 14.5% · IA 14.5%289th of 911 in IA
Median age37.6
39th
U.S. 38.9 · IA 38.6705th of 911 in IA
Median household income$71,179
38th
U.S. $80,734 · IA $75,059528th of 896 in IA
Rent-burdened renters47.6%
38th
U.S. 51.1% · IA 43.9%221st of 882 in IA
Per capita income$33,598
29th
U.S. $44,673 · IA $40,877671st of 911 in IA
Uninsured rate4.6%
28th
U.S. 8.4% · IA 5%362nd of 911 in IA
Median earnings per worker$41,221
25th
U.S. $49,666 · IA $47,712732nd of 910 in IA
Tech workers1.5%
23rd
U.S. 3.8% · IA 2.9%309th of 911 in IA
Income inequality (Gini)0.403
23rd
U.S. 0.483 · IA 0.444409th of 908 in IA
Bachelor's degree or higher19.9%
20th
WeaknessU.S. 35.7% · IA 31.4%506th of 911 in IA
Median gross rent$947
17th
U.S. $1,413 · IA $972204th of 771 in IA
Broadband access86.2%
16th
WeaknessU.S. 91% · IA 88.9%607th of 909 in IA
Work from home5.9%
11th
U.S. 15.1% · IA 11.3%643rd of 911 in IA
Median home value$151,600
10th
U.S. $332,700 · IA $208,000523rd of 881 in IA
Average commute18.3 min
7th
StrengthU.S. 26.4 min · IA 19.8 min728th of 902 in IA
Population3,500
6th
U.S. 334,922,499 · IA 3,210,507178th of 911 in IA
Diversity index12.4
6th
U.S. 61.4 · IA 31.4489th of 911 in IA
Population density27/sq mi
4th
U.S. 95/sq mi · IA 58/sq mi367th of 911 in IA
Unemployment rate1.2%
2nd
StrengthU.S. 5.2% · IA 3.6%622nd of 911 in IA
Foreign-born residents0%
1st
U.S. 14.1% · IA 5.9%843rd of 911 in IA

Measure	51040	Monona	IA	U.S.	National percentile	Rank in IA
Self-employed workers	14.8%	17%	10.2%	10%	90th	387th of 911
Healthcare workers	12.9%	11.2%	9.2%	9.7%	88th	154th of 911
Residents 65 and older	22.1%	24.4%	18.1%	17.2%	84th	343rd of 911
Veterans	8.8%	9.8%	6.5%	6.2%	83rd	244th of 911
Housing vacancy	10.2%	11.3%	8.5%	10.1%	72nd	378th of 909
Homeownership rate	75.3%	75.7%	71.7%	65.2%	67th	678th of 909
Poverty rate	14.2%	10.6%	11.1%	12.5%	66th	182nd of 909
Residents under 18	23.8%	22.6%	22.9%	22%	65th	408th of 911
Government workers	15.9%	15.5%	14.5%	14.5%	65th	289th of 911
Median age	37.6	43.7	38.6	38.9	39th	705th of 911
Median household income	$71,179	$68,377	$75,059	$80,734	38th	528th of 896
Rent-burdened renters	47.6%	40%	43.9%	51.1%	38th	221st of 882
Per capita income	$33,598	$35,795	$40,877	$44,673	29th	671st of 911
Uninsured rate	4.6%	3.9%	5%	8.4%	28th	362nd of 911
Median earnings per worker	$41,221	$44,476	$47,712	$49,666	25th	732nd of 910
Tech workers	1.5%	1.4%	2.9%	3.8%	23rd	309th of 911
Income inequality (Gini)	0.403	0.413	0.444	0.483	23rd	409th of 908
Bachelor's degree or higherWeakness	19.9%	19.6%	31.4%	35.7%	20th	506th of 911
Median gross rent	$947	$855	$972	$1,413	17th	204th of 771
Broadband accessWeakness	86.2%	84.9%	88.9%	91%	16th	607th of 909
Work from home	5.9%	7.7%	11.3%	15.1%	11th	643rd of 911
Median home value	$151,600	$142,900	$208,000	$332,700	10th	523rd of 881
Average commuteStrength	18.3 min	22.6 min	19.8 min	26.4 min	7th	728th of 902
Population	3,500	8,557	3,210,507	334,922,499	6th	178th of 911
Diversity index	12.4	13.6	31.4	61.4	6th	489th of 911
Population density	27/sq mi	12/sq mi	58/sq mi	95/sq mi	4th	367th of 911
Unemployment rateStrength	1.2%	1.6%	3.6%	5.2%	2nd	622nd of 911
Foreign-born residents	0%	0.7%	5.9%	14.1%	1st	843rd 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

18%

5–17

18–24

14%

25–34

11%

35–44

45–54

12%

55–64

11%

65–74

11%

75+

Median age

37.6

Under 18

23.8%

65 and over

22.1%

Race and ethnicity

White93%
Black0.4%
Hispanic1%
Asian0%
Native American0.2%
Pacific Islander0%
Other0%
Multiracial5%

Diversity index

12.4

U.S. 61.4

Foreign-born

U.S. 14.1%

Born in state

82.6%

Language spoken at home (households)

English only

95%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 1,555
Average household size: 2.2
Family households: 58.6%
Married couples: 46.7%
Living alone: 33%
Veterans (of adults): 8.8%
Male / female: 48% / 52%

Income and poverty

Household income distribution

<$25k

17%

$25–50k

21%

$50–75k

15%

$75–100k

19%

$100–150k

19%

$150–200k

$200k+

Median household income

51040

$71,179

Monona Co.

$68,377

Iowa

$75,059

United States

$80,734

Per capita income

$33,598

U.S. $44,673

Poverty rate

14.2%

U.S. 12.5%

Households earning $150K+

9.4%

U.S. 23%

Income inequality (Gini)

0.403

U.S. 0.483

Housing

Median home value

51040

$151,600

Monona Co.

$142,900

Iowa

$208,000

United States

$332,700

Median gross rent

51040

$947

Monona Co.

$855

Iowa

$972

United States

$1,413

Types of housing

Single-family

82%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 1,731
Owner-occupied: 75.3%
Vacant: 10.2%
Median year built: 1961
Median rooms: 5.9
Renters paying 30%+ of income: 47.6%
Renters paying 50%+ of income: 28.5%
Home value to income: 2.1× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

80%

Carpooled

14%

Transit

Walked

0.1%

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

40%

10–19

25%

20–29

10%

30–44

13%

45–59

60+

Average commute

18.3 min

U.S. 26.4 min

Unemployment

1.2%

U.S. 5.2%

In labor force

62.2%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Construction and repair

18%

Management

15%

Healthcare

13%

Office and admin

11%

Production

Transportation and moving

Education

Sales

Cleaning and personal care

Food service

Business and finance

Engineering and science

Computer and math

Police and fire

Legal and social services

0.9%

Arts, media and sports

0.9%

Farming, fishing and forestry

0.2%

Industries

Health care and social assistance

18%

Construction

12%

Manufacturing

10%

Agriculture and mining

10%

Education

10%

Retail

Finance, insurance and real estate

Transportation, warehousing and utilities

Admin, support and management

Other services

Public administration

Restaurants and hotels

Professional and technical services

Arts and recreation

Wholesale

0.7%

Information

0.2%

Median earnings per worker

$41,221

U.S. $49,666

Self-employed

14.8%

U.S. 10%

Government workers

15.9%

U.S. 14.5%

Nonprofit workers

5.8%

U.S. 8.8%

Median earnings by type of work

Type of work	51040	U.S.
Management, business, science and arts	$54,528	$74,888
Service	$25,849	$26,804
Sales and office	$33,438	$40,476
Construction and maintenance	$60,083	$49,199
Production and transportation	$48,155	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

37%

Some college

24%

Associate's

11%

Bachelor's

14%

Graduate

High school graduate or higher: 92.1%
Bachelor's degree or higher: 19.9%
Graduate or professional degree: 5.6%
Households with broadband: 86.2%
Cable, fiber or DSL: 61.3%
No internet access: 11.8%
Without health insurance: 4.6%
Limited-English households: 0%

Geography

City (USPS): Onawa
State: Iowa
County: Monona County
Center point: 42.0325° N, 96.0687° W
Land area: 130 sq mi
Water area: 1.6 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Onawa4% of zip

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

Zip codes near 51040

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
51523	Blencoe, IA	8.1 mi	379	$82,625	$136,800
51010	Castana, IA	8.1 mi	425	$89,063	$114,800
51063	Whiting, IA	9.3 mi	1,072	$80,750	$159,500
68020	Decatur, NE	11 mi	644	$48,750	$120,300
51558	Moorhead, IA	13 mi	549	$77,417	$100,000
51545	Little Sioux, IA	13 mi	267	$70,313	$80,000
51051	Rodney, IA	13 mi	39	$51,563	$170,800
51572	Soldier, IA	14 mi	371	$69,500	$101,300
68039	Macy, NE	15 mi	793	$46,313	$55,900
51026	Hornick, IA	15 mi	910	$80,500	$211,400
51056	Smithland, IA	16 mi	346	$103,313	$157,400
51055	Sloan, IA	16 mi	1,346	$72,143	$218,300

Zip codes like 51040 elsewhere

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

Questions about 51040

What city is zip code 51040?

51040 is assigned to Onawa, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 51040 in?

51040 is in Monona County, Iowa.

What is the population of 51040?

About 3,500 people live in 51040, according to the Census Bureau's American Community Survey.

What time zone is 51040 in?

51040 is in Central Time.

What is the median household income in 51040?

The median household income in 51040 is $71,179.

What zip codes are near 51040?

The closest zip codes to 51040 are 51523, 51010, 51063, 68020, 51558.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 51040, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.