Janesville vs Plainfield

A side-by-side comparison of Janesville and Plainfield: population, income, housing, and more.

Janesville and Plainfield are places in Iowa. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Janesville has the higher population (1,012 vs 379 in Plainfield). Janesville has the higher median household income ($84,231 vs $75,500 in Plainfield). Janesville has the higher median home value ($214,700 vs $132,700 in Plainfield).

Population, income & housing

	Janesville	Plainfield
Population	1,012	379
Median age	44.7 yrs	43.4 yrs
Median household income	$84,231	$75,500
Median home value	$214,700	$132,700
Median gross rent	$625	$682
Housing units	456	183
Homeownership rate	90.5%	84.1%
Bachelor's degree or higher	25.8%	11.1%
Unemployment rate	3.0%	10.0%

Trends (ACS 5-year, 2019–2023)

	Janesville	Plainfield
Population	981 → 1,012 (+3.2%)	517 → 379 (-26.7%)
Median household income	$63,750 → $84,231 (+32.1%)	$58,681 → $75,500 (+28.7%)
Median home value	$167,200 → $214,700 (+28.4%)	$82,700 → $132,700 (+60.5%)
Median gross rent	$625 → $625 (+0.0%)	$625 → $682 (+9.1%)

Janesville

Population

9811,012

Median household income

$63,750$84,231

Median home value

$167,200$214,700

Median gross rent

$625$625

Plainfield

Population

517379

Median household income

$58,681$75,500

Median home value

$82,700$132,700

Median gross rent

$625$682

Age & race/ethnicity

Age distribution (share)

	Janesville	Plainfield
Under 5	7.2%	5.3%
5 to 17	17.0%	17.2%
18 to 24	4.4%	8.7%
25 to 34	12.0%	11.1%
35 to 44	9.9%	12.9%
45 to 54	12.7%	12.1%
55 to 64	20.6%	11.1%
65 to 74	12.3%	11.9%
75 and over	4.0%	9.8%

Race & ethnicity (share)

	Janesville	Plainfield
White (non-Hispanic)	97.4%	90.5%
Black or African American	0.0%	0.0%
American Indian & Alaska Native	0.0%	0.3%
Asian	0.0%	0.3%
Native Hawaiian & Pacific Islander	0.0%	0.8%
Some other race	0.0%	0.0%
Two or more races	0.4%	4.0%
Hispanic or Latino	2.2%	4.2%

Educational attainment (age 25+)

Share of adults 25+

	Janesville	Plainfield
No high school diploma	1.7%	4.2%
High school graduate	27.4%	46.0%
Some college or associate's	45.2%	38.7%
Bachelor's degree	22.4%	10.3%
Graduate or professional degree	3.3%	0.8%

Commute to work

How workers get to work (share)

	Janesville	Plainfield
Drove alone	80.0%	84.7%
Carpooled	10.2%	5.8%
Public transit	0.0%	0.5%
Walked	3.6%	0.0%
Bicycle	0.0%	0.0%
Worked from home	6.2%	7.9%
Other means	0.0%	1.1%

Housing

Units in structure (share)

	Janesville	Plainfield
1-unit, detached	86.6%	95.1%
1-unit, attached	3.7%	1.1%
2 to 4 units	5.5%	3.8%
5 to 19 units	1.1%	0.0%
20 or more units	0.0%	0.0%
Mobile home & other	3.1%	0.0%

Poverty & households

	Janesville	Plainfield
Poverty rate	5.8%	7.4%
Average household size	2.54	2.31
Mean commute (minutes)	21	22
Median year structure built	1973	1958