Grundy County, Iowa Population 2024

12,326

Grundy County, Iowa's estimated 2024 population is 12,326 with a growth rate of -0.12% in the past year according to the most recent United States census data. Grundy County, Iowa is the 61st largest county in Iowa. The 2010 population was 12,464 and has seen a growth of -1.11% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202912,251-15-0.12%
202812,266-15-0.12%
202712,281-15-0.12%
202612,296-15-0.12%
202512,311-15-0.12%
202412,326-15-0.12%
202312,341-15-0.12%
202212,356-15-0.12%
202112,371370.3%
202012,3341070.88%
201912,227-41-0.33%
201812,268-28-0.23%
201712,296-7-0.06%
201612,303-99-0.8%
201512,402140.11%
201412,388480.39%
201312,340-97-0.78%
201212,437-41-0.33%
201112,478140.11%
201012,464
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%
190013,7575424.1%
189013,2155764.56%
188012,6396,24097.52%
18706,3995,606706.94%
1860793-11,458-93.53%
showing: 34 rows
2024 Growth Rate
-0.12% (-15)
County Website
Grundy County
State
Iowa
County Seat
2010 Population
12,464
Area
502 mi²
Density
25 people/mi²
Growth Since 2010
-1.11% (-138)
Founded
1851

Grundy County, Iowa Population 2024

Population by Race

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Race
Population
Percentage (of total)
White11,89396.29%
Two or more races1981.6%
Black or African American1040.84%
Other race860.7%
Asian560.45%
Native American140.11%
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Grundy County, Iowa Population by Race

Grundy County, Iowa Population Pyramid 2024

Grundy County, Iowa Median Age

41.6

Total

40.8

Male

42.1

Female

Grundy County, Iowa Adults

There are 9,447 adults, (2,546 of whom are seniors) in Grundy County, Iowa.

Grundy County, Iowa Age Dependency

79

Age Dependency Ratio

36.9

Old Age Dependency Ratio

42.1

Child Dependency Ratio

Grundy County, Iowa Sex Ratio

Female6,20050.2%
Male6,15149.8%

Grundy County, Iowa Population by Age

Grundy County, Iowa Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All5,0622.4183.316.7
Married3,0102.9492.77.3
Non Family1,5591.1868.531.5
Female2723.1675.424.6
Male2212.9269.230.8
showing: 5 rows

2.9

Average Family Size

2.41

Average Household Size

83.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Grundy County, Iowa 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

Grundy County, Iowa Educational Attainment by Sex (over 25)

Grundy County, Iowa Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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

The highest rate of bachelors degrees is among native american people with a rate of 64.29%.

Grundy County, Iowa Educational Attainment by Race

All

Male

Female

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$47,934

Average Earnings

$56,611

Average Male

$37,441

Average Female

Grundy County, Iowa Earnings by Educational Attainment

Grundy County, Iowa Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Grundy County, Iowa Language

97.79% of Grundy County, Iowa residents speak only English, while 2.21% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.53% of the population.

Grundy County, Iowa Language

Grundy County, Iowa Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White11,6177106.11%
Hispanic218146.42%
Other8666.98%
Multiple19831.52%
showing: 4 rows

5.94%

Overall Poverty Rate

3.92%

Male Poverty Rate

7.98%

Female Poverty Rate

Poverty in Grundy County, Iowa

The race most likely to be in poverty in Grundy County, Iowa is Other, with 6.98% below the poverty level.

The race least likely to be in poverty in Grundy County, Iowa is Multiple, with 1.52% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.32%. Among those working part-time, it was 6.39%, and for those that did not work, the poverty rate was 11.61%.

Grundy County, Iowa Poverty

rate

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Rate
Poverty
Less Than 9th Grade19.88%
High School5.83%
Some College5.33%
Bachelors or Greater1.39%
showing: 4 rows

Grundy County, Iowa Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed7.61%
Female Unemployed5.97%
Female Employed3.92%
Male Employed1.42%
showing: 4 rows

Grundy County, Iowa Poverty Rate by Employment Status and Sex

Grundy County, Iowa Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Grundy County, Iowa Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

61.9%

Overall Marriage Rate

62.5%

Male Marriage Rate

61.3%

Female Marriage Rate

Grundy County, Iowa Married by Age and Sex

male

female

Grundy 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.

Grundy County, Iowa Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Grundy County, Iowa Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

615

Number of Veterans

567

Male Veterans

48

Female Veterans

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Grundy County, Iowa Veterans by War

count

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Grundy County, Iowa Veterans by Age

count

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Grundy County, Iowa Veterans by Race

Grundy County, Iowa Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.7%

Veteran Poverty Rate

27.39%

Veteran Disability Rate

Grundy County, Iowa Veterans by Education

LaborForceParticipation

65.7%

Labor Force Participation

64.1%

Employment Rate

2.5%

Unemployment Rate

Grundy County, Iowa Employment by Age

LaborForceParticipation

Grundy County, Iowa Employment by Race

LaborForceParticipation

Grundy County, Iowa 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

85.38%

Born in Grundy County, Iowa

98.19%

Native Born

1.81%

Foreign Born

0.83%

Non Citizen

0.98%

Naturalized

Place of Birth

98.19% of Grundy County, Iowa residents were born in the United States, with 85.38% having been born in Iowa. 0.83% 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

Sources