Hamilton County, Iowa Population 2024

14,694

Hamilton County, Iowa's estimated 2024 population is 14,694 with a growth rate of -0.43% in the past year according to the most recent United States census data. Hamilton County, Iowa is the 52nd largest county in Iowa. The 2010 population was 15,634 and has seen a growth of -6.01% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202914,379-63-0.44%
202814,442-63-0.43%
202714,505-63-0.43%
202614,568-63-0.43%
202514,631-63-0.43%
202414,694-63-0.43%
202314,757-63-0.43%
202214,820-63-0.42%
202114,883-125-0.83%
202015,0082111.43%
201914,797-90-0.6%
201814,887-147-0.98%
201715,034-56-0.37%
201615,090-130-0.85%
201515,220-2-0.01%
201415,222-125-0.81%
201315,347260.17%
201215,321-147-0.95%
201115,468-166-1.06%
201015,634
199016,071-1,791-10.03%
198017,862-521-2.83%
197018,383-1,649-8.23%
196020,0323721.89%
195019,660-262-1.32%
194019,922-1,056-5.03%
193020,9781,4477.41%
192019,5312891.5%
191019,242-272-1.39%
190019,5144,19527.38%
189015,3194,06736.14%
188011,2525,19785.83%
18706,0554,356256.39%
18601,699-12,680-88.18%
showing: 34 rows
2024 Growth Rate
-0.43% (-63)
County Website
Hamilton County
State
Iowa
County Seat
2010 Population
15,634
Area
577 mi²
Density
25 people/mi²
Growth Since 2010
-6.01% (-940)
Founded
1856

Hamilton County, Iowa Population 2024

Population by Race

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Race
Population
Percentage (of total)
White13,59790.77%
Two or more races6144.1%
Asian2631.76%
Black or African American2071.38%
Other race1631.09%
Native Hawaiian or Pacific Islander1250.83%
Native American100.07%
showing: 7 rows

White

Two or more races

Asian

Black or African American

Other race

Native Hawaiian or Pacific Islander

Native American

Hamilton County, Iowa Population by Race

Hamilton County, Iowa Population Pyramid 2024

Hamilton County, Iowa Median Age

41.9

Total

40.4

Male

44.3

Female

Hamilton County, Iowa Adults

There are 11,657 adults, (3,193 of whom are seniors) in Hamilton County, Iowa.

Hamilton County, Iowa Age Dependency

77

Age Dependency Ratio

37.7

Old Age Dependency Ratio

39.2

Child Dependency Ratio

Hamilton County, Iowa Sex Ratio

Female7,34249.02%
Male7,63750.98%

Hamilton County, Iowa Population by Age

Hamilton County, Iowa Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All6,2032.3871.428.6
Married3,0223.0984.915.1
Non Family2,4221.196337
Female4823.1955.644.4
Male2773.6125.374.7
showing: 5 rows

3.05

Average Family Size

2.38

Average Household Size

71.4%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Hamilton 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

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

Hamilton 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 native american people with a rate of 100%.

The highest rate of bachelors degrees is among islander people with a rate of 100%.

Hamilton County, Iowa Educational Attainment by Race

All

Male

Female

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$48,512

Average Earnings

$57,310

Average Male

$34,393

Average Female

Hamilton County, Iowa Earnings by Educational Attainment

Hamilton County, Iowa Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Hamilton County, Iowa Language

91.36% of Hamilton County, Iowa residents speak only English, while 8.64% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.25% of the population.

Hamilton County, Iowa Language

Hamilton County, Iowa Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White12,8368806.86%
Black19614674.49%
Multiple6149214.98%
Hispanic997858.53%
Native10330%
showing: 5 rows

7.78%

Overall Poverty Rate

7.07%

Male Poverty Rate

8.51%

Female Poverty Rate

Poverty in Hamilton County, Iowa

The race most likely to be in poverty in Hamilton County, Iowa is Black, with 74.49% below the poverty level.

The race least likely to be in poverty in Hamilton County, Iowa is White, with 6.86% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.68%. Among those working part-time, it was 15.4%, and for those that did not work, the poverty rate was 11.77%.

Hamilton County, Iowa Poverty

rate

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Rate
Poverty
Less Than 9th Grade12.17%
High School9.19%
Some College4.71%
Bachelors or Greater2.73%
showing: 4 rows

Hamilton County, Iowa Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed44.86%
Female Unemployed39.66%
Female Employed5.99%
Male Employed2.63%
showing: 4 rows

Hamilton County, Iowa Poverty Rate by Employment Status and Sex

Hamilton County, Iowa Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Hamilton County, Iowa Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

53.0%

Overall Marriage Rate

50.6%

Male Marriage Rate

55.3%

Female Marriage Rate

Hamilton County, Iowa Married by Age and Sex

male

female

Hamilton County, Iowa 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.

Hamilton County, Iowa Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Hamilton County, Iowa Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

883

Number of Veterans

860

Male Veterans

23

Female Veterans

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Hamilton County, Iowa Veterans by War

count

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Hamilton County, Iowa Veterans by Age

count

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Hamilton County, Iowa Veterans by Race

Hamilton County, Iowa Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

13.91%

Veteran Poverty Rate

29.08%

Veteran Disability Rate

Hamilton County, Iowa Veterans by Education

LaborForceParticipation

63.3%

Labor Force Participation

60.5%

Employment Rate

4%

Unemployment Rate

Hamilton County, Iowa Employment by Age

LaborForceParticipation

Hamilton County, Iowa Employment by Race

LaborForceParticipation

Hamilton 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

79.4%

Born in Hamilton County, Iowa

95.78%

Native Born

4.22%

Foreign Born

3.11%

Non Citizen

1.11%

Naturalized

Place of Birth

95.78% of Hamilton County, Iowa residents were born in the United States, with 79.4% having been born in Iowa. 3.11% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Hamilton County, Iowa Place of Birth

Sources