US Census Data

Buchanan County vs Mahaska County

A side-by-side comparison of Buchanan County and Mahaska County: population, income, housing, and more.

Buchanan County and Mahaska County are counties in Iowa. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Mahaska County has the higher population (22,045 vs 20,645 in Buchanan County). Buchanan County has the higher median household income ($78,430 vs $69,019 in Mahaska County). Buchanan County has the higher median home value ($171,400 vs $140,900 in Mahaska County).

Population, income & housing

Buchanan CountyMahaska County
Population20,64522,045
Median age39.9 yrs39.1 yrs
Median household income$78,430$69,019
Median home value$171,400$140,900
Median gross rent$802$821
Housing units8,9469,708
Homeownership rate81.1%67.8%
Bachelor's degree or higher22.3%23.0%
Unemployment rate2.7%3.3%

Trends (ACS 5-year, 2019–2023)

Buchanan CountyMahaska County
Population21,118 → 20,645 (-2.2%)22,164 → 22,045 (-0.5%)
Median household income$64,837 → $78,430 (+21.0%)$54,825 → $69,019 (+25.9%)
Median home value$142,500 → $171,400 (+20.3%)$115,300 → $140,900 (+22.2%)
Median gross rent$678 → $802 (+18.3%)$652 → $821 (+25.9%)

Buchanan County

Population
21,11820,645
Median household income
$64,837$78,430
Median home value
$142,500$171,400
Median gross rent
$678$802

Mahaska County

Population
22,16422,045
Median household income
$54,825$69,019
Median home value
$115,300$140,900
Median gross rent
$652$821

Age & race/ethnicity

Age distribution (share)

Buchanan CountyMahaska County
Under 56.6%6.1%
5 to 1719.1%17.8%
18 to 247.1%9.8%
25 to 3410.9%11.2%
35 to 4412.6%11.9%
45 to 5411.5%11.1%
55 to 6413.9%13.1%
65 to 7410.9%10.9%
75 and over7.4%8.1%

Race & ethnicity (share)

Buchanan CountyMahaska County
White (non-Hispanic)95.2%92.2%
Black or African American0.7%1.5%
American Indian & Alaska Native0.1%0.0%
Asian0.2%1.2%
Native Hawaiian & Pacific Islander0.1%0.0%
Some other race0.0%0.1%
Two or more races1.8%2.6%
Hispanic or Latino1.8%2.4%

Educational attainment (age 25+)

Share of adults 25+

Buchanan CountyMahaska County
No high school diploma5.4%6.0%
High school graduate36.1%38.7%
Some college or associate's36.2%32.3%
Bachelor's degree15.9%17.0%
Graduate or professional degree6.4%6.0%

Commute to work

How workers get to work (share)

Buchanan CountyMahaska County
Drove alone78.2%80.2%
Carpooled8.9%9.4%
Public transit0.3%0.1%
Walked3.1%3.7%
Bicycle0.4%0.0%
Worked from home8.9%6.3%
Other means0.3%0.3%

Housing

Units in structure (share)

Buchanan CountyMahaska County
1-unit, detached81.8%78.1%
1-unit, attached1.7%1.0%
2 to 4 units7.3%8.9%
5 to 19 units2.1%5.3%
20 or more units1.6%1.4%
Mobile home & other5.5%5.3%

Poverty & households

Buchanan CountyMahaska County
Poverty rate7.0%11.9%
Average household size2.512.40
Mean commute (minutes)2318
Median year structure built19711963

Full profiles

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Buchanan County vs Mahaska County: Compare Population & Demographics | US Census Data