Grimes vs Johnston

A side-by-side comparison of Grimes and Johnston: population, income, housing, and more.

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

Johnston has the higher population (24,196 vs 15,810 in Grimes). Grimes has the higher median household income ($104,497 vs $103,430 in Johnston). Johnston has the higher median home value ($346,200 vs $281,000 in Grimes).

Population, income & housing

	Grimes	Johnston
Population	15,810	24,196
Median age	34.3 yrs	38.4 yrs
Median household income	$104,497	$103,430
Median home value	$281,000	$346,200
Median gross rent	$1,156	$1,288
Housing units	6,209	9,868
Homeownership rate	70.0%	72.3%
Bachelor's degree or higher	47.6%	57.9%
Unemployment rate	6.3%	1.8%

Trends (ACS 5-year, 2019–2023)

	Grimes	Johnston
Population	12,839 → 15,810 (+23.1%)	21,406 → 24,196 (+13.0%)
Median household income	$81,950 → $104,497 (+27.5%)	$96,948 → $103,430 (+6.7%)
Median home value	$225,800 → $281,000 (+24.4%)	$268,300 → $346,200 (+29.0%)
Median gross rent	$1,002 → $1,156 (+15.4%)	$1,146 → $1,288 (+12.4%)

Grimes

Population

12,83915,810

Median household income

$81,950$104,497

Median home value

$225,800$281,000

Median gross rent

$1,002$1,156

Johnston

Population

21,40624,196

Median household income

$96,948$103,430

Median home value

$268,300$346,200

Median gross rent

$1,146$1,288

Age & race/ethnicity

Age distribution (share)

	Grimes	Johnston
Under 5	6.3%	6.0%
5 to 17	21.3%	23.0%
18 to 24	8.7%	6.2%
25 to 34	14.1%	10.2%
35 to 44	19.3%	14.5%
45 to 54	12.5%	14.8%
55 to 64	9.7%	9.2%
65 to 74	5.3%	9.7%
75 and over	2.8%	6.4%

Race & ethnicity (share)

	Grimes	Johnston
White (non-Hispanic)	85.0%	79.3%
Black or African American	2.3%	8.6%
American Indian & Alaska Native	0.0%	0.1%
Asian	3.6%	7.2%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.1%
Two or more races	2.7%	2.7%
Hispanic or Latino	6.5%	2.1%

Educational attainment (age 25+)

Share of adults 25+

	Grimes	Johnston
No high school diploma	0.8%	2.5%
High school graduate	27.1%	14.5%
Some college or associate's	24.6%	25.1%
Bachelor's degree	31.4%	36.7%
Graduate or professional degree	16.2%	21.1%

Commute to work

How workers get to work (share)

	Grimes	Johnston
Drove alone	66.8%	79.2%
Carpooled	7.5%	4.7%
Public transit	0.0%	0.0%
Walked	1.0%	1.0%
Bicycle	0.0%	0.1%
Worked from home	24.5%	14.5%
Other means	0.3%	0.4%

Housing

Units in structure (share)

	Grimes	Johnston
1-unit, detached	60.6%	58.7%
1-unit, attached	8.9%	15.0%
2 to 4 units	1.3%	1.5%
5 to 19 units	13.5%	9.9%
20 or more units	10.6%	15.0%
Mobile home & other	5.1%	0.0%

Poverty & households

	Grimes	Johnston
Poverty rate	6.8%	7.6%
Average household size	2.57	2.51
Mean commute (minutes)	19	19
Median year structure built	2008	2004