Onawa, Iowa Population 2021

2,726
map placeholder

Onawa is a city located in Monona County Iowa. It is also the county seat of Monona County. With a 2020 population of 2,726, it is the 122nd largest city in Iowa and the 6547th largest city in the United States . Onawa is currently declining at a rate of -0.69% annually and its population has decreased by -9.07% since the most recent census, which recorded a population of 2,998 in 2010. Onawa reached it's highest population of 3,498 in 1950. Spanning over 5 miles, Onawa has a population density of 525 people per square mile.

The average household income in Onawa is $50,536 with a poverty rate of 25.10%. The median rental costs in recent years comes to $611 per month, and the median house value is $83,900. The median age in Onawa is 41.7 years, 37.7 years for males, and 46.8 years for females.

Onawa Demographics

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

  • White: 91.87%
  • Native American: 5.39%
  • Two or more races: 1.36%
  • Native Hawaiian or Pacific Islander: 1.28%
  • Black or African American: 0.11%
  • Asian: 0.00%
  • Other race: 0.00%
The current population of Onawa, Iowa is 2,726 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 2,783.The last official US Census in 2010 recorded the population at 2,998.

Onawa, Iowa Population 2021

Population by Race

Race Population Percentage
White2,57691.87%
American Indian and Alaska Native1515.39%
Two or More Races381.36%
Native Hawaiian and Other Pacific Islander361.28%
Black or African American30.11%
Loading...

Onawa Population by Race

Onawa Population Pyramid $2021

Loading...

Onawa Median Age

41.7


Total

37.7


Male

46.8


Female

Onawa Adults

There are 2,374 adults, (615 of whom are seniors) in Onawa.

Onawa Age Dependency

59.4

Age Dependency Ratio

35

Old Age Dependency Ratio

24.4

Child Dependency Ratio

Onawa Sex Ratio

Female

1,484

52.92%

Male

1,320

47.08%

Onawa Population by Age

Onawa Renter vs Owner Occupied by Household Type

Loading...

Onawa Household Types

Type Owner Renter
Married83.8%16.2%
All58.5%41.5%
Non Family46.2%53.8%
Female41.5%58.5%
Male8.3%91.7%

58.5%

Rate of Home Ownership

Onawa Households and Families

Type Count Average Size Owned
All1,3462.0158.5
Non Family5841.1946.2
Married5312.6183.8
Female1592.6741.5
Male722.798.3

2.46

Average Family Size

2.01

Average Household Size

Loading...

Onawa Households by Type

Loading...
Education Attained Count Percentage
Less Than 9th Grade653.08%
9th to 12th Grade954.50%
High School Graduate83639.62%
Some College62729.72%
Associates Degree25812.23%
Bachelors Degree1416.68%
Graduate Degree884.17%
Loading...

Onawa Educational Attainment by Sex (over 25)

Onawa Educational Attainment by Race

Loading...
Race Total High School Bachelors
White1,8361,676229
Native American151151
Hispanic4949
2+ Races3838
Islander3636

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 12.47%.

Onawa Educational Attainment by Race

Loading...
Name Average Male Female
Overall$28,304$37,365$21,020
Less Than 9th Grade$18,889$$
High School Graduate$27,659$40,491$18,606
Some College$22,092$35,203$20,417
Bachelors Degree$56,932$56,023$58,500
Graduate Degree$65,795$$65,795

$28,304

Average Earnings

$37,365

Average Male

$21,020

Average Female

Onawa Earnings by Educational Attainment

Onawa Language by Age

Loading...

Onawa Language

99.05% of Onawa residents speak only English, while 0.95% speak other languages. The non-English language spoken by the largest group is Other languages, which is spoken by 0.59% of the population.

Onawa Language

Onawa Poverty by Race

Loading...
Name Total In Poverty Poverty Rate
White2,42151621.31%
Hispanic7575100.00%
Native1516845.03%
Islander361850.00%
Multiple38615.79%

25.10%

Overall Poverty Rate

23.06%

Male Poverty Rate

26.94%

Female Poverty Rate

Poverty in Onawa

The race most likely to be in poverty in Onawa is Hispanic, with 100.00% below the poverty level.

The race least likely to be in poverty in Onawa is Multiple, with 15.79% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 12.29%. Among those working part-time, it was 31.69%, and for those that did not work, the poverty rate was 29.64%.

Onawa Poverty

Loading...
Name Poverty
Some College30.80%
Less Than 9th Grade26.52%
High School16.83%
Bachelors or Greater0.00%

Onawa Poverty Rate by Education

Loading...
Rate Poverty
Male Unemployed54.55%
Female Unemployed28.95%
Male Employed23.15%
Female Employed18.03%

Onawa Poverty Rate by Employment Status and Sex

Onawa Income by Household Type

Loading...
Name Median Mean
Households$36,406$50,536
Families$51,364$64,754
Married Families$63,942-
Non Families$24,833$30,118
Loading...

Income by Household Type

Onawa Marital Status

Loading...

Marriage Rates

44.5%

Overall Marriage Rate

48.2%

Male Marriage Rate

41.4%

Female Marriage Rate

Onawa Married by Age and Sex

Loading...

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

Loading...

Onawa Marital Status

Loading...

238

Number of Veterans

222

Male Veterans

16

Female Veterans

War Veterans
Vietnam73
Korea34
Second Gulf War32
World War II18
First Gulf War18

Onawa Veterans by War

Loading...
Age Group Veterans
75+85
65 to 7460
55 to 6443
18 to 3432
35 to 5418

Onawa Veterans by Age

Loading...

Onawa Veterans by Race

Onawa Veterans by Education

Loading...

10.67%

Veteran Poverty Rate

30.22%

Veteran Disability Rate

Onawa Veterans by Education

Loading...

65.9%

Labor Force Participation

63.4%

Employment Rate

3.8%

Unemployment Rate

Onawa Employment by Age

Loading...

Onawa Employment by Race

Loading...

Onawa Employment by Education

Origin of Non-Citizens

Loading...

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

Origin of Naturalized Citizens

Loading...

68.44%

Born in Onawa

99.96%

Native Born

0.04%

Foreign Born

0.04%

Non Citizen

0.00%

Naturalized

Place of Birth

99.96% of Onawa residents were born in the United States, with 68.44% having been born in Iowa. 0.04% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Africa.

Onawa Place of Birth

Year Population Growth Annual Growth Rate
20212,726-19-0.69%
20202,745-19-0.69%
20192,764-19-0.68%
20182,783-23-0.82%
20172,806-23-0.81%
20162,829-24-0.84%
20152,853-9-0.31%
20142,862-44-1.51%
20132,906-26-0.89%
20122,932-61-2.04%
20112,993-6-0.20%
20102,999-92-0.30%
20003,0911550.52%
19902,936-347-1.11%
19803,2831290.40%
19703,154-22-0.07%
19603,176-322-0.96%
19503,498600.17%
19403,4389003.08%
19302,5380.00%

Onawa Population by Year