Onawa, Iowa Population 2023

2,741

Onawa is a city located in Monona County Iowa. It is also the county seat of Monona County. With a 2023 population of 2,741, it is the 128th largest city in Iowa and the 6539th largest city in the United States.Onawa is currently declining at a rate of -1.93% annually and its population has decreased by -5.68% since the most recent census, which recorded a population of 2,906 in 2020. Spanning over 5 miles, Onawa has a population density of 528 people per square mile.

The average household income in Onawa is $50,536 with a poverty rate of 20.24%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Onawa is 43.9 years, 37.1 years for males, and 49.1 years for females.

Onawa Demographics

According to the most recent ACS, the racial composition of Onawa was:

  • White: 93.29%
  • Two or more races: 3.3%
  • Native American: 2.04%
  • Native Hawaiian or Pacific Islander: 1.29%
  • Black or African American: 0.07%
  • Asian: 0%
  • Other race: 0%
The current population of Onawa, Iowa is 2,741 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 2,906.

Onawa, Iowa Population 2023

Population by Race

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White

Two or more races

Native American

Native Hawaiian or Pacific Islander

Black or African American

Asian

Other race

Onawa Population by Race

Onawa Population Pyramid 2023

Onawa Median Age

43.9

Total

37.1

Male

49.1

Female

Onawa Adults

There are 2,275 adults, (617 of whom are seniors) in Onawa.

Onawa Age Dependency

68.2

Age Dependency Ratio

37.2

Old Age Dependency Ratio

30.9

Child Dependency Ratio

Onawa Sex Ratio

Female1,51854.45%
Male1,27045.55%

Onawa Population by Age

Onawa Renter vs Owner Occupied by Household Type

2.74

Average Family Size

2.08

Average Household Size

65.6%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Onawa Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Onawa Educational Attainment by Sex (over 25)

Onawa Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among native american people with a rate of 100%.

The highest rate of bachelors degrees is among white people with a rate of 9.84%.

Onawa Educational Attainment by Race

All

Male

Female

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$29,784

Average Earnings

$40,919

Average Male

$28,139

Average Female

Onawa Earnings by Educational Attainment

Onawa Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Onawa Language

97.48% of Onawa residents speak only English, while 2.52% speak other languages. The non-English language spoken by the largest group is Other languages, which is spoken by 2.15% of the population.

Onawa Language

Onawa Poverty by Race

rate

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20.24%

Overall Poverty Rate

15.81%

Male Poverty Rate

19.36%

Female Poverty Rate

Poverty in Onawa

The race most likely to be in poverty in Onawa is Hispanic, with 139.53% below the poverty level.

The race least likely to be in poverty in Onawa is White, with 17.6% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 5.48%. Among those working part-time, it was 25.16%, and for those that did not work, the poverty rate was 29.12%.

Onawa Poverty

rate

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Onawa Poverty Rate by Education

rate

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Onawa Poverty Rate by Employment Status and Sex

Onawa Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Onawa Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

50.9%

Overall Marriage Rate

54.5%

Male Marriage Rate

47.9%

Female Marriage Rate

Onawa Married by Age and Sex

male

female

Onawa Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Onawa Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Onawa Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

225

Number of Veterans

215

Male Veterans

10

Female Veterans

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Onawa Veterans by War

count

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Onawa Veterans by Age

count

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Onawa Veterans by Race

Onawa Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.72%

Veteran Poverty Rate

40.57%

Veteran Disability Rate

Onawa Veterans by Education

LaborForceParticipation

62.8%

Labor Force Participation

60.5%

Employment Rate

3.6%

Unemployment Rate

Onawa Employment by Age

LaborForceParticipation

Onawa Employment by Race

LaborForceParticipation

Onawa Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

67.62%

Born in Onawa

95.91%

Native Born

0.03%

Foreign Born

0.03%

Non Citizen

0%

Naturalized

Place of Birth

95.91% of Onawa residents were born in the United States, with 67.62% having been born in Iowa. 0.03% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Africa.

Onawa Place of Birth

Note: data after 2021 is projected based on recent change
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Onawa Population by Year