Marion County, Iowa Population 2021

Marion County, Iowa's estimated population is 33,241 with a growth rate of -0.02% in the past year according to the most recent United States census data. Marion County, Iowa is the 23rd largest county inIowa. The 2010 Population was 33,225 and has seen a growth of 0.05% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
202133,241-6-0.02%
202033,247-6-0.02%
201933,253-6-0.02%
201833,2591680.51%
201733,091-55-0.17%
201633,146370.11%
201533,109-160-0.48%
201433,2692550.77%
201333,014-260-0.78%
201233,27440.01%
201133,270450.14%
201033,2253,22410.75%
199030,0013321.12%
198029,6693,31712.59%
197026,3524661.80%
196025,886-44-0.17%
195025,930-1,089-4.03%
194027,0191,2925.02%
193025,7277703.09%
192024,9571,9628.53%
191022,995-1,164-4.82%
190024,1591,1014.77%
189023,058-2,053-8.18%
188025,1116752.76%
187024,4367,62345.34%
186016,81311,331206.69%
18505,4820.00%
2021 Growth Rate
-0.02% (-6)
County Website
State
Founded
1845
County Seat
2010 Population
33,225
Growth Since 2010
0.05% (16)
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Marion County, Iowa Population Growth

Population by Race

Race Population Percentage
White31,77295.78%
Two or More Races4631.40%
Asian3711.12%
Black or African American3491.05%
Some Other Race1390.42%
American Indian and Alaska Native710.21%
Native Hawaiian and Other Pacific Islander70.02%
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Marion County, Iowa Population by Race

Marion County, Iowa Population Pyramid $2021

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Marion County, Iowa Median Age

39.4


Total

38.1


Male

41


Female

Marion County, Iowa Adults

There are 25,428 adults, (5,805 of whom are seniors) in Marion County, Iowa.

Marion County, Iowa Age Dependency

69

Age Dependency Ratio

29.6

Old Age Dependency Ratio

39.5

Child Dependency Ratio

Marion County, Iowa Sex Ratio

Female

16,674

50.27%

Male

16,498

49.73%

Marion County, Iowa Population by Age

Marion County, Iowa Renter vs Owner Occupied by Household Type

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Marion County, Iowa Household Types

Type Owner Renter
Non Family50.2%49.8%
Female55.8%44.2%
Male70.7%29.3%
All70.8%29.2%
Married85.3%14.7%

70.8%

Rate of Home Ownership

Marion County, Iowa Households and Families

Type Count Average Size Owned
All13,3652.3570.8
Married7,4192.9785.3
Non Family4,4831.1850.2
Female1,0122.8755.8
Male4512.8170.7

2.91

Average Family Size

2.35

Average Household Size

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Marion County, Iowa Households by Type

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Education Attained Count Percentage
Less Than 9th Grade6102.78%
9th to 12th Grade8593.91%
High School Graduate7,50434.14%
Some College4,34219.75%
Associates Degree2,33610.63%
Bachelors Degree4,19219.07%
Graduate Degree2,1379.72%
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Marion County, Iowa Educational Attainment by Sex (over 25)

Marion County, Iowa Educational Attainment by Race

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Race Total High School Bachelors
White20,92519,5115,960
Hispanic31628585
Asian278270187
Black24524441
2+ Races17115943
Other Race1109656
Native American71683
Islander777

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

The highest rate of bachelors degrees is among islander people with a rate of 100.00%.

Marion County, Iowa Educational Attainment by Race

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Name Average Male Female
Overall$42,263$52,458$30,598
Less Than 9th Grade$23,245$24,226$16,848
High School Graduate$37,038$45,213$24,260
Some College$38,731$49,295$26,921
Bachelors Degree$51,517$67,911$38,517
Graduate Degree$65,926$77,406$56,521

$42,263

Average Earnings

$52,458

Average Male

$30,598

Average Female

Marion County, Iowa Earnings by Educational Attainment

Marion County, Iowa Language by Age

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Marion County, Iowa Language

97.03% of Marion County, Iowa residents speak only English, while 2.97% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.43% of the population.

Marion County, Iowa Language

Marion County, Iowa Poverty by Race

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Name Total In Poverty Poverty Rate
White30,0082,1977.32%
Hispanic51915429.67%
Native714664.79%
Other1104036.36%
Multiple438327.31%
Asian304206.58%
Black338175.03%

7.81%

Overall Poverty Rate

6.01%

Male Poverty Rate

9.58%

Female Poverty Rate

Poverty in Marion County, Iowa

The race most likely to be in poverty in Marion County, Iowa is Native, with 64.79% below the poverty level.

The race least likely to be in poverty in Marion County, Iowa is Black, with 5.03% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.84%. Among those working part-time, it was 10.92%, and for those that did not work, the poverty rate was 14.69%.

Marion County, Iowa Poverty

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Name Poverty
Less Than 9th Grade14.46%
High School9.65%
Some College8.70%
Bachelors or Greater2.90%

Marion County, Iowa Poverty Rate by Education

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Rate Poverty
Female Unemployed22.30%
Male Unemployed21.72%
Female Employed5.80%
Male Employed2.77%

Marion County, Iowa Poverty Rate by Employment Status and Sex

Marion County, Iowa Income by Household Type

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Name Median Mean
Households$61,038$75,361
Families$75,677$86,882
Married Families$83,371-
Non Families$35,528$50,599
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Income by Household Type

Marion County, Iowa Marital Status

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Marriage Rates

56.8%

Overall Marriage Rate

57.8%

Male Marriage Rate

55.8%

Female Marriage Rate

Marion County, Iowa Married by Age and Sex

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Marion County, Iowa Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Marion County, Iowa Marital Status by Race

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Marion County, Iowa Marital Status

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1,951

Number of Veterans

1,776

Male Veterans

175

Female Veterans

War Veterans
Vietnam694
Second Gulf War344
First Gulf War306
Korea221
World War II65

Marion County, Iowa Veterans by War

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Age Group Veterans
75+544
65 to 74522
35 to 54401
55 to 64328
18 to 34156

Marion County, Iowa Veterans by Age

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Name Veterans % of Total
White1,8997.79%
2+ Races4219.09%
Native American1014.08%

Marion County, Iowa Veterans by Race

Marion County, Iowa Veterans by Education

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9.06%

Veteran Poverty Rate

36.02%

Veteran Disability Rate

Marion County, Iowa Veterans by Education

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65.7%

Labor Force Participation

64.2%

Employment Rate

2.2%

Unemployment Rate

Marion County, Iowa Employment by Age

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Marion County, Iowa Employment by Race

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Marion County, Iowa Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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76.10%

Born in Marion County, Iowa

98.16%

Native Born

1.84%

Foreign Born

0.70%

Non Citizen

1.14%

Naturalized

Place of Birth

98.16% of Marion County, Iowa residents were born in the United States, with 76.10% having been born in Iowa. 0.70% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Marion County, Iowa Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources