What stands out worked out from the figures below

Londonderry has the most expensive homes ($505k median).

Union has the most affordable homes ($268k median).

What matters to you?

Pick a few. We’ll pull those rows to the top and mark which town comes out ahead on each. There’s no overall score: what matters is up to you.

Raising kidsAffordabilityOwning a homeShort commuteWorking from homeYounger crowdSettled, older crowdGrowing town

Measure	Londonderry	Union
People
Population	26,685Highest	2,663Lowest
Growth since 20102010 → 2020 census	+7%Highest U.S.: +7.4%	+5.5%Lowest U.S.: +7.4%
Median age	42.7±0.9Highest 10% above U.S.	41.6±5.3Lowest 7% above U.S.
	Londonderry and Union are within the Census margin of error here, so we can’t say which is really higher.
Kids under 18	20.6%±2.1Lowest U.S.: 22%	24.9%±4Highest U.S.: 22%
	Union and Londonderry are within the Census margin of error here, so we can’t say which is really higher.
Age 65+	16.4%±1.9Lowest U.S.: 17.2%	21.4%±3.1Highest U.S.: 17.2%
	Union and Londonderry are within the Census margin of error here, so we can’t say which is really higher.
Bachelor’s degree+adults 25+	47.6%Highest U.S.: 35.7%	34.4%Lowest U.S.: 35.7%
Enrolled in collegeshare of residents	4.8%±1Highest U.S.: 6.4%	3.5%±1.5Lowest U.S.: 6.4%
	Londonderry and Union are within the Census margin of error here, so we can’t say which is really higher.
Cost of living
Household incomemedian	$132,556±$14kHighest 64% above U.S.	$80,724±$9kLowest about the U.S. average
Home valuemedian, owner-occupied	$505,200±$20kHighest 52% above U.S.	$267,600±$42kLowest 20% below U.S.
Rentmedian gross, monthly	$1,803±$154Highest 28% above U.S.	$1,179±$452Lowest 17% below U.S.
Property taxmedian, yearly	$8,069Highest 159% above U.S.	$3,276Lowest 5% above U.S.
Renters paying 30%+of income on rent	48.9%±7.8Highest U.S.: 51.1%	24.6%±19.8Lowest U.S.: 51.1%
	Londonderry and Union are within the Census margin of error here, so we can’t say which is really higher.
Below poverty line	2.7%Lowest U.S.: 12.5%	10.2%Highest U.S.: 12.5%
Housing
Homeownersof occupied homes	85.6%Lowest U.S.: 65.2%	85.9%Highest U.S.: 65.2%
Typical home builtmedian year	1986Highest 6 yrs newer than U.S.	1979Lowest 1 yr older than U.S.
Getting to work
Average commuteone way	29 minLowest 8% above U.S.	29 minHighest 11% above U.S.
Work from home	22.8%±2.7Highest U.S.: 15.1%	15.9%±5.3Lowest U.S.: 15.1%
	Londonderry and Union are within the Census margin of error here, so we can’t say which is really higher.
Schools
Public school scoresrank in state, math + reading	#37 of 120 in NH	—
School district	Londonderry School District	RSU 40/MSAD 40
High school in town	Londonderry Senior High School	None in town
Students per teacherat that high school	12.0	—
On TownTapestry
Old photos in History	None yet	None yet

U.S. average · Sources: U.S. Census Bureau, American Community Survey 5-year estimates 2020–2024; 2010 & 2020 decennial census; NCES Common Core of Data. “±” is the Census margin of error. Property tax is top-coded by the Census at $10,000+. School rank compares math and reading proficiency against the state average.