Buchanan County, Iowa Population 2024

20,748

Buchanan County, Iowa's estimated 2024 population is 20,748 with a growth rate of 0.08% in the past year according to the most recent United States census data. Buchanan County, Iowa is the 30th largest county in Iowa. The 2010 population was 20,975 and has seen a growth of -1.08% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202920,833170.08%
202820,816170.08%
202720,799170.08%
202620,782170.08%
202520,765170.08%
202420,748170.08%
202320,731170.08%
202220,714170.08%
202120,697910.44%
202020,606-542-2.56%
201921,14880.04%
201821,14070.03%
201721,1331340.64%
201620,999-111-0.53%
201521,110-25-0.12%
201421,1351070.51%
201321,028330.16%
201220,995840.4%
201120,911-64-0.31%
201020,975
199020,844-2,056-8.98%
198022,9001,1545.31%
197021,746-547-2.45%
196022,2933661.67%
195021,9279364.46%
194020,9911,4417.37%
193019,550-340-1.71%
192019,8901420.72%
191019,748-1,679-7.84%
190021,4272,43012.79%
189018,9974512.43%
188018,5461,5128.88%
187017,0349,128115.46%
18607,9067,3891429.21%
1850517-20,316-97.52%
showing: 35 rows
2024 Growth Rate
0.08% (17)
County Website
Buchanan County
State
Iowa
County Seat
2010 Population
20,975
Area
571 mi²
Density
36 people/mi²
Growth Since 2010
-1.08% (-227)
Founded
1837

Buchanan County, Iowa Population 2024

Population by Race

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Race
Population
Percentage (of total)
White19,95596.72%
Two or more races4282.07%
Black or African American1600.78%
Native American360.17%
Native Hawaiian or Pacific Islander190.09%
Other race190.09%
Asian140.07%
showing: 7 rows

White

Two or more races

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Asian

Buchanan County, Iowa Population by Race

Buchanan County, Iowa Population Pyramid 2024

Buchanan County, Iowa Median Age

39.5

Total

38.6

Male

41.4

Female

Buchanan County, Iowa Adults

There are 15,324 adults, (3,733 of whom are seniors) in Buchanan County, Iowa.

Buchanan County, Iowa Age Dependency

78

Age Dependency Ratio

32.2

Old Age Dependency Ratio

45.8

Child Dependency Ratio

Buchanan County, Iowa Sex Ratio

Female10,29149.88%
Male10,34050.12%

Buchanan County, Iowa Population by Age

Buchanan County, Iowa Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All8,0202.5580.619.4
Married4,4613.1692.97.1
Non Family2,5241.1964.635.4
Female6903.2763.836.2
Male3453.0873.326.7
showing: 5 rows

3.08

Average Family Size

2.55

Average Household Size

80.6%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Buchanan 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

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

Buchanan 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 islander people with a rate of 100%.

The highest rate of bachelors degrees is among hispanic people with a rate of 49.53%.

Buchanan County, Iowa Educational Attainment by Race

All

Male

Female

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$43,503

Average Earnings

$52,555

Average Male

$36,793

Average Female

Buchanan County, Iowa Earnings by Educational Attainment

Buchanan County, Iowa Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Buchanan County, Iowa Language

95.19% of Buchanan County, Iowa residents speak only English, while 4.81% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 3.11% of the population.

Buchanan County, Iowa Language

Buchanan County, Iowa Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White19,5041,6688.55%
Multiple4266314.79%
Hispanic378225.82%
Black150106.67%
Asian14750%
showing: 5 rows

8.63%

Overall Poverty Rate

7.08%

Male Poverty Rate

10.19%

Female Poverty Rate

Poverty in Buchanan County, Iowa

The race most likely to be in poverty in Buchanan County, Iowa is Asian, with 50% below the poverty level.

The race least likely to be in poverty in Buchanan County, Iowa is Hispanic, with 5.82% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.38%. Among those working part-time, it was 10.65%, and for those that did not work, the poverty rate was 15.6%.

Buchanan County, Iowa Poverty

rate

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Rate
Poverty
Less Than 9th Grade12.14%
High School9.96%
Some College9.08%
Bachelors or Greater2.68%
showing: 4 rows

Buchanan County, Iowa Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed42.68%
Female Unemployed38.13%
Female Employed5.4%
Male Employed3.35%
showing: 4 rows

Buchanan County, Iowa Poverty Rate by Employment Status and Sex

Buchanan County, Iowa Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Buchanan County, Iowa Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

56.6%

Overall Marriage Rate

56.6%

Male Marriage Rate

56.5%

Female Marriage Rate

Buchanan County, Iowa Married by Age and Sex

male

female

Buchanan 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 55-64.

Buchanan County, Iowa Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Buchanan County, Iowa Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,139

Number of Veterans

1,069

Male Veterans

70

Female Veterans

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Buchanan County, Iowa Veterans by War

count

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Buchanan County, Iowa Veterans by Age

count

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Buchanan County, Iowa Veterans by Race

Buchanan County, Iowa Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

3.66%

Veteran Poverty Rate

33.69%

Veteran Disability Rate

Buchanan County, Iowa Veterans by Education

LaborForceParticipation

67.2%

Labor Force Participation

65.1%

Employment Rate

3%

Unemployment Rate

Buchanan County, Iowa Employment by Age

LaborForceParticipation

Buchanan County, Iowa Employment by Race

LaborForceParticipation

Buchanan 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

86.07%

Born in Buchanan County, Iowa

98.45%

Native Born

1.55%

Foreign Born

1.15%

Non Citizen

0.4%

Naturalized

Place of Birth

98.45% of Buchanan County, Iowa residents were born in the United States, with 86.07% having been born in Iowa. 1.15% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Africa.

Buchanan County, Iowa Place of Birth

Sources