Johnson County vs Linn County

A side-by-side comparison of Johnson County and Linn County: population, income, housing, and more.

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

Linn County has the higher population (229,463 vs 154,881 in Johnson County). Linn County has the higher median household income ($76,421 vs $74,721 in Johnson County). Johnson County has the higher median home value ($293,100 vs $204,400 in Linn County).

Population, income & housing

	Johnson County	Linn County
Population	154,881	229,463
Median age	30.8 yrs	38.5 yrs
Median household income	$74,721	$76,421
Median home value	$293,100	$204,400
Median gross rent	$1,104	$915
Housing units	67,211	101,989
Homeownership rate	58.8%	73.3%
Bachelor's degree or higher	54.6%	34.8%
Unemployment rate	3.7%	3.7%

Trends (ACS 5-year, 2019–2023)

	Johnson County	Linn County
Population	148,577 → 154,881 (+4.2%)	223,861 → 229,463 (+2.5%)
Median household income	$62,542 → $74,721 (+19.5%)	$64,903 → $76,421 (+17.7%)
Median home value	$227,600 → $293,100 (+28.8%)	$157,000 → $204,400 (+30.2%)
Median gross rent	$972 → $1,104 (+13.6%)	$761 → $915 (+20.2%)

Johnson County

Population

148,577154,881

Median household income

$62,542$74,721

Median home value

$227,600$293,100

Median gross rent

$972$1,104

Linn County

Population

223,861229,463

Median household income

$64,903$76,421

Median home value

$157,000$204,400

Median gross rent

$761$915

Age & race/ethnicity

Age distribution (share)

	Johnson County	Linn County
Under 5	5.4%	5.9%
5 to 17	14.1%	16.8%
18 to 24	20.9%	9.0%
25 to 34	14.8%	13.3%
35 to 44	12.4%	13.4%
45 to 54	9.9%	12.1%
55 to 64	9.6%	12.7%
65 to 74	7.9%	9.8%
75 and over	5.0%	7.0%

Race & ethnicity (share)

	Johnson County	Linn County
White (non-Hispanic)	75.5%	83.0%
Black or African American	7.5%	5.7%
American Indian & Alaska Native	0.1%	0.1%
Asian	5.8%	2.3%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.4%	0.5%
Two or more races	4.0%	4.5%
Hispanic or Latino	6.7%	4.0%

Educational attainment (age 25+)

Share of adults 25+

	Johnson County	Linn County
No high school diploma	3.8%	4.7%
High school graduate	15.8%	26.1%
Some college or associate's	25.9%	34.4%
Bachelor's degree	30.6%	23.5%
Graduate or professional degree	24.0%	11.3%

Commute to work

How workers get to work (share)

	Johnson County	Linn County
Drove alone	64.9%	76.4%
Carpooled	7.5%	6.3%
Public transit	4.1%	0.6%
Walked	7.9%	1.9%
Bicycle	1.9%	0.2%
Worked from home	12.6%	13.7%
Other means	1.1%	0.8%

Housing

Units in structure (share)

	Johnson County	Linn County
1-unit, detached	48.6%	67.0%
1-unit, attached	11.9%	5.4%
2 to 4 units	6.0%	5.6%
5 to 19 units	17.1%	11.5%
20 or more units	12.7%	7.0%
Mobile home & other	3.7%	3.5%

Poverty & households

	Johnson County	Linn County
Poverty rate	16.7%	9.9%
Average household size	2.36	2.36
Mean commute (minutes)	20	19
Median year structure built	1991	1977