Grundy County, Iowa Population 2021

Grundy County, Iowa's estimated population is 12,152 with a growth rate of -0.33% in the past year according to the most recent United States census data. Grundy County, Iowa is the 63rd largest county inIowa. The 2010 Population was 12,463 and has seen a growth of -2.50% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
202112,152-40-0.33%
202012,192-40-0.33%
201912,232-40-0.33%
201812,272-26-0.21%
201712,298120.10%
201612,286-119-0.96%
201512,405150.12%
201412,390490.40%
201312,341-96-0.77%
201212,437-41-0.33%
201112,478150.12%
201012,4634343.61%
199012,029-2,337-16.27%
198014,3662471.75%
197014,119-13-0.09%
196014,1324102.99%
195013,7222041.51%
194013,518-615-4.35%
193014,133-287-1.99%
192014,4208466.23%
191013,574-183-1.33%
190013,7575424.10%
189013,2155764.56%
188012,6396,24097.52%
18706,3995,606706.94%
18607930.00%
2021 Growth Rate
-0.33% (-40)
County Website
State
Founded
1851
County Seat
2010 Population
12,463
Growth Since 2010
-2.50% (-311)
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Grundy County, Iowa Population Growth

Population by Race

Race Population Percentage
White12,08098.22%
Two or More Races980.80%
Black or African American740.60%
Asian340.28%
American Indian and Alaska Native130.11%
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Grundy County, Iowa Population by Race

Grundy County, Iowa Population Pyramid $2021

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Grundy County, Iowa Median Age

42.6


Total

41.7


Male

43.8


Female

Grundy County, Iowa Adults

There are 9,464 adults, (2,519 of whom are seniors) in Grundy County, Iowa.

Grundy County, Iowa Age Dependency

77.1

Age Dependency Ratio

36.3

Old Age Dependency Ratio

40.8

Child Dependency Ratio

Grundy County, Iowa Sex Ratio

Female

6,212

50.51%

Male

6,087

49.49%

Grundy County, Iowa Population by Age

Grundy County, Iowa Renter vs Owner Occupied by Household Type

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Grundy County, Iowa Household Types

Type Owner Renter
Male55.4%44.6%
Non Family68%32%
Female70%30%
All81.6%18.4%
Married91.3%8.7%

81.6%

Rate of Home Ownership

Grundy County, Iowa Households and Families

Type Count Average Size Owned
All5,1552.3581.6
Married3,0762.8891.3
Non Family1,5961.2168
Female2902.8870
Male1932.6355.4

2.83

Average Family Size

2.35

Average Household Size

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Grundy County, Iowa Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1361.58%
9th to 12th Grade3343.87%
High School Graduate2,72431.57%
Some College1,69919.69%
Associates Degree1,32815.39%
Bachelors Degree1,88921.89%
Graduate Degree5186.00%
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Grundy County, Iowa Educational Attainment by Sex (over 25)

Grundy County, Iowa Educational Attainment by Race

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Race Total High School Bachelors
White8,4238,0152,305
Hispanic852718
2+ Races565644
Asian312711
Black202016
Native American131313

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

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

Grundy County, Iowa Educational Attainment by Race

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Name Average Male Female
Overall$42,865$52,048$31,925
Less Than 9th Grade$34,904$41,121$24,688
High School Graduate$38,995$47,418$24,079
Some College$39,424$49,186$26,178
Bachelors Degree$51,892$70,625$42,610
Graduate Degree$64,306$89,602$50,517

$42,865

Average Earnings

$52,048

Average Male

$31,925

Average Female

Grundy County, Iowa Earnings by Educational Attainment

Grundy County, Iowa Language by Age

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Grundy County, Iowa Language

97.59% of Grundy County, Iowa residents speak only English, while 2.41% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.31% of the population.

Grundy County, Iowa Language

Grundy County, Iowa Poverty by Race

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Name Total In Poverty Poverty Rate
White11,7446625.64%
Hispanic15485.19%
Multiple9877.14%

5.60%

Overall Poverty Rate

4.39%

Male Poverty Rate

6.79%

Female Poverty Rate

Poverty in Grundy County, Iowa

The race most likely to be in poverty in Grundy County, Iowa is Multiple, with 7.14% below the poverty level.

The race least likely to be in poverty in Grundy County, Iowa is Hispanic, with 5.19% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.87%. Among those working part-time, it was 7.25%, and for those that did not work, the poverty rate was 11.42%.

Grundy County, Iowa Poverty

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Name Poverty
Less Than 9th Grade19.17%
High School6.91%
Some College4.02%
Bachelors or Greater1.09%

Grundy County, Iowa Poverty Rate by Education

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Rate Poverty
Female Unemployed26.98%
Male Unemployed12.82%
Female Employed2.25%
Male Employed2.13%

Grundy County, Iowa Poverty Rate by Employment Status and Sex

Grundy County, Iowa Income by Household Type

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Name Median Mean
Households$68,038$85,664
Families$80,687$97,920
Married Families$87,045-
Non Families$38,782$56,112
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Income by Household Type

Grundy County, Iowa Marital Status

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Marriage Rates

63.1%

Overall Marriage Rate

65.4%

Male Marriage Rate

60.9%

Female Marriage Rate

Grundy County, Iowa Married by Age and Sex

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Grundy County, Iowa Marriage

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

Grundy County, Iowa Marital Status by Race

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Grundy County, Iowa Marital Status

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635

Number of Veterans

613

Male Veterans

22

Female Veterans

War Veterans
Vietnam279
Korea120
First Gulf War88
Second Gulf War69
World War II14

Grundy County, Iowa Veterans by War

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Age Group Veterans
75+207
65 to 74202
35 to 54116
55 to 6493
18 to 3417

Grundy County, Iowa Veterans by Age

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Name Veterans % of Total
White6136.57%
Black1680.00%
2+ Races69.52%

Grundy County, Iowa Veterans by Race

Grundy County, Iowa Veterans by Education

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3.30%

Veteran Poverty Rate

24.92%

Veteran Disability Rate

Grundy County, Iowa Veterans by Education

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64.7%

Labor Force Participation

63.3%

Employment Rate

2.2%

Unemployment Rate

Grundy County, Iowa Employment by Age

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Grundy County, Iowa Employment by Race

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Grundy 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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84.61%

Born in Grundy County, Iowa

99.02%

Native Born

0.98%

Foreign Born

0.16%

Non Citizen

0.81%

Naturalized

Place of Birth

99.02% of Grundy County, Iowa residents were born in the United States, with 84.61% having been born in Iowa. 0.16% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Grundy 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