Decatur County vs Monona County

A side-by-side comparison of Decatur County and Monona County: population, income, housing, and more.

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

Monona County has the higher population (8,619 vs 7,669 in Decatur County). Monona County has the higher median household income ($62,944 vs $57,146 in Decatur County). Monona County has the higher median home value ($122,600 vs $109,500 in Decatur County).

Population, income & housing

	Decatur County	Monona County
Population	7,669	8,619
Median age	36.2 yrs	44.7 yrs
Median household income	$57,146	$62,944
Median home value	$109,500	$122,600
Median gross rent	$663	$795
Housing units	3,651	4,390
Homeownership rate	68.0%	76.4%
Bachelor's degree or higher	24.3%	18.7%
Unemployment rate	3.2%	2.1%

Trends (ACS 5-year, 2019–2023)

	Decatur County	Monona County
Population	7,979 → 7,669 (-3.9%)	8,730 → 8,619 (-1.3%)
Median household income	$44,462 → $57,146 (+28.5%)	$47,605 → $62,944 (+32.2%)
Median home value	$83,200 → $109,500 (+31.6%)	$86,900 → $122,600 (+41.1%)
Median gross rent	$567 → $663 (+16.9%)	$613 → $795 (+29.7%)

Decatur County

Population

7,9797,669

Median household income

$44,462$57,146

Median home value

$83,200$109,500

Median gross rent

$567$663

Monona County

Population

8,7308,619

Median household income

$47,605$62,944

Median home value

$86,900$122,600

Median gross rent

$613$795

Age & race/ethnicity

Age distribution (share)

	Decatur County	Monona County
Under 5	6.0%	5.6%
5 to 17	16.6%	16.8%
18 to 24	15.3%	6.2%
25 to 34	10.7%	10.7%
35 to 44	9.3%	10.7%
45 to 54	9.3%	11.3%
55 to 64	12.1%	14.8%
65 to 74	11.5%	12.6%
75 and over	9.3%	11.2%

Race & ethnicity (share)

	Decatur County	Monona County
White (non-Hispanic)	90.9%	93.3%
Black or African American	1.6%	0.2%
American Indian & Alaska Native	0.3%	0.6%
Asian	0.5%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.1%
Some other race	0.5%	0.0%
Two or more races	2.9%	3.3%
Hispanic or Latino	3.3%	2.5%

Educational attainment (age 25+)

Share of adults 25+

	Decatur County	Monona County
No high school diploma	11.0%	6.4%
High school graduate	37.5%	39.4%
Some college or associate's	27.2%	35.4%
Bachelor's degree	14.2%	12.7%
Graduate or professional degree	10.1%	6.0%

Commute to work

How workers get to work (share)

	Decatur County	Monona County
Drove alone	75.7%	80.9%
Carpooled	10.2%	7.3%
Public transit	0.0%	0.5%
Walked	5.8%	1.6%
Bicycle	0.0%	0.0%
Worked from home	7.9%	9.0%
Other means	0.4%	0.8%

Housing

Units in structure (share)

	Decatur County	Monona County
1-unit, detached	77.6%	84.6%
1-unit, attached	0.9%	0.6%
2 to 4 units	7.2%	2.3%
5 to 19 units	2.9%	3.3%
20 or more units	4.1%	3.1%
Mobile home & other	7.2%	6.0%

Poverty & households

	Decatur County	Monona County
Poverty rate	15.2%	11.2%
Average household size	2.32	2.16
Mean commute (minutes)	23	23
Median year structure built	1968	1955