Irwin vs Portsmouth

A side-by-side comparison of Irwin and Portsmouth: population, income, housing, and more.

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

Irwin has the higher population (297 vs 200 in Portsmouth). Portsmouth has the higher median household income ($79,643 vs $47,917 in Irwin). Portsmouth has the higher median home value ($115,500 vs $71,100 in Irwin).

Population, income & housing

	Irwin	Portsmouth
Population	297	200
Median age	46.6 yrs	43.5 yrs
Median household income	$47,917	$79,643
Median home value	$71,100	$115,500
Median gross rent	$700	$575
Housing units	158	105
Homeownership rate	89.4%	93.9%
Bachelor's degree or higher	25.9%	10.7%
Unemployment rate	0.7%	0.0%

Trends (ACS 5-year, 2019–2023)

	Irwin	Portsmouth
Population	344 → 297 (-13.7%)	126 → 200 (+58.7%)
Median household income	$62,708 → $47,917 (-23.6%)	$56,250 → $79,643 (+41.6%)
Median home value	$67,400 → $71,100 (+5.5%)	$107,800 → $115,500 (+7.1%)
Median gross rent	$542 → $700 (+29.2%)	$583 → $575 (-1.4%)

Irwin

Population

344297

Median household income

$62,708$47,917

Median home value

$67,400$71,100

Median gross rent

$542$700

Portsmouth

Population

126200

Median household income

$56,250$79,643

Median home value

$107,800$115,500

Median gross rent

$583$575

Age & race/ethnicity

Age distribution (share)

	Irwin	Portsmouth
Under 5	3.0%	7.0%
5 to 17	17.8%	17.0%
18 to 24	16.8%	1.5%
25 to 34	8.1%	15.5%
35 to 44	2.0%	10.5%
45 to 54	13.8%	19.5%
55 to 64	11.8%	15.0%
65 to 74	12.1%	10.0%
75 and over	14.5%	4.0%

Race & ethnicity (share)

	Irwin	Portsmouth
White (non-Hispanic)	92.9%	87.0%
Black or African American	0.0%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.0%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	0.7%	10.0%
Hispanic or Latino	6.4%	3.0%

Educational attainment (age 25+)

Share of adults 25+

	Irwin	Portsmouth
No high school diploma	5.4%	5.4%
High school graduate	29.2%	32.2%
Some college or associate's	39.5%	51.7%
Bachelor's degree	19.5%	8.1%
Graduate or professional degree	6.5%	2.7%

Commute to work

How workers get to work (share)

	Irwin	Portsmouth
Drove alone	78.9%	74.8%
Carpooled	9.5%	2.4%
Public transit	0.0%	0.0%
Walked	3.4%	12.6%
Bicycle	0.0%	0.0%
Worked from home	7.5%	7.1%
Other means	0.7%	3.1%

Housing

Units in structure (share)

	Irwin	Portsmouth
1-unit, detached	93.7%	98.1%
1-unit, attached	0.0%	0.0%
2 to 4 units	3.2%	1.0%
5 to 19 units	0.0%	0.0%
20 or more units	0.0%	0.0%
Mobile home & other	3.2%	1.0%

Poverty & households

	Irwin	Portsmouth
Poverty rate	12.9%	3.0%
Average household size	2.11	2.04
Mean commute (minutes)	18	23
Median year structure built	1947	1957