Londonderry vs Portsmouth

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

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

Portsmouth has the higher population (22,332 vs 12,307 in Londonderry). Londonderry has the higher median household income ($113,109 vs $105,756 in Portsmouth). Portsmouth has the higher median home value ($640,600 vs $433,100 in Londonderry).

Population, income & housing

	Londonderry	Portsmouth
Population	12,307	22,332
Median age	42.5 yrs	42.4 yrs
Median household income	$113,109	$105,756
Median home value	$433,100	$640,600
Median gross rent	$1,917	$1,778
Housing units	4,634	11,094
Homeownership rate	83.3%	52.1%
Bachelor's degree or higher	46.1%	63.4%
Unemployment rate	4.5%	2.1%

Trends (ACS 5-year, 2019–2023)

	Londonderry	Portsmouth
Population	11,841 → 12,307 (+3.9%)	21,775 → 22,332 (+2.6%)
Median household income	$97,596 → $113,109 (+15.9%)	$83,923 → $105,756 (+26.0%)
Median home value	$310,200 → $433,100 (+39.6%)	$425,600 → $640,600 (+50.5%)
Median gross rent	$1,459 → $1,917 (+31.4%)	$1,305 → $1,778 (+36.2%)

Londonderry

Population

11,84112,307

Median household income

$97,596$113,109

Median home value

$310,200$433,100

Median gross rent

$1,459$1,917

Portsmouth

Population

21,77522,332

Median household income

$83,923$105,756

Median home value

$425,600$640,600

Median gross rent

$1,305$1,778

Age & race/ethnicity

Age distribution (share)

	Londonderry	Portsmouth
Under 5	4.1%	4.1%
5 to 17	14.4%	10.8%
18 to 24	12.1%	7.5%
25 to 34	11.1%	16.9%
35 to 44	12.1%	13.4%
45 to 54	13.9%	11.2%
55 to 64	15.3%	15.2%
65 to 74	9.2%	10.3%
75 and over	7.7%	10.6%

Race & ethnicity (share)

	Londonderry	Portsmouth
White (non-Hispanic)	93.1%	86.7%
Black or African American	0.4%	0.7%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.2%	3.9%
Native Hawaiian & Pacific Islander	0.2%	0.0%
Some other race	0.1%	1.6%
Two or more races	1.4%	3.4%
Hispanic or Latino	4.6%	3.5%

Educational attainment (age 25+)

Share of adults 25+

	Londonderry	Portsmouth
No high school diploma	3.4%	2.4%
High school graduate	26.5%	16.8%
Some college or associate's	24.0%	17.4%
Bachelor's degree	29.9%	41.7%
Graduate or professional degree	16.3%	21.7%

Commute to work

How workers get to work (share)

	Londonderry	Portsmouth
Drove alone	73.0%	67.0%
Carpooled	7.9%	4.3%
Public transit	0.3%	1.2%
Walked	0.5%	5.0%
Bicycle	0.0%	0.5%
Worked from home	16.8%	20.7%
Other means	1.5%	1.3%

Housing

Units in structure (share)

	Londonderry	Portsmouth
1-unit, detached	60.4%	39.7%
1-unit, attached	18.2%	9.0%
2 to 4 units	2.4%	16.5%
5 to 19 units	12.1%	19.3%
20 or more units	4.4%	13.6%
Mobile home & other	2.4%	2.0%

Poverty & households

	Londonderry	Portsmouth
Poverty rate	2.8%	5.5%
Average household size	2.74	2.07
Mean commute (minutes)	27	22
Median year structure built	1983	1958