What stands out worked out from the figures below

New Castle has the most expensive homes ($1701k median).

Portsmouth has grown the fastest since 2010 (+5.7%).

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	New Castle	Portsmouth
People
Population	827Lowest	22,545Highest
Growth since 20102010 → 2020 census	+3.3%Lowest NH: +4.6%	+5.7%Highest NH: +4.6%
Median age	62.8±6Highest 45% above NH	42.9±2Lowest about the NH average
Kids under 18	12.9%±7.1Lowest NH: 18.2%	14%±1.9Highest NH: 18.2%
	Portsmouth and New Castle are within the Census margin of error here, so we can’t say which is really higher.
Age 65+	44.3%±16.1Highest NH: 20.1%	21.9%±2.4Lowest NH: 20.1%
Bachelor’s degree+adults 25+	68.8%Highest NH: 40.6%	64%Lowest NH: 40.6%
Enrolled in collegeshare of residents	0.6%±1.8Lowest NH: 6%	3.8%±1.2Highest NH: 6%
Cost of living
Household incomemedian	$176,953±$29kHighest 79% above NH	$106,219±$7kLowest 7% above NH
Home valuemedian, owner-occupied	$1,701,300±$267kHighest 323% above NH	$688,500±$39kLowest 71% above NH
Rentmedian gross, monthly	$3,501Highest 135% above NH	$1,869±$111Lowest 25% above NH
Property taxmedian, yearly	$8,509Highest 28% above NH	$8,018Lowest 20% above NH
Renters paying 30%+of income on rent	0%±85.7Lowest NH: 48.2%	50.4%±7.2Highest NH: 48.2%
	Portsmouth and New Castle are within the Census margin of error here, so we can’t say which is really higher.
Below poverty line	4.6%Lowest NH: 7.2%	6.8%Highest NH: 7.2%
Housing
Homeownersof occupied homes	93%Highest NH: 72.8%	51.9%Lowest NH: 72.8%
Typical home builtmedian year	1975Highest 4 yrs older than NH	1959Lowest 20 yrs older than NH
Getting to work
Average commuteone way	33 minHighest 22% above NH	22 minLowest 17% below NH
Work from home	40.1%±19.4Highest NH: 16.8%	21.9%±4Lowest NH: 16.8%
	New Castle and Portsmouth 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	—	#11 of 120 in NH
School district	New Castle School District	Portsmouth School District
High school in town	None in town	Portsmouth High School
Students per teacherat that high school	—	11.4
On TownTapestry
Old photos in Our Story	None yet	None yet

NH 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.