What stands out worked out from the figures below

Seabrook has the oldest population (median age 54).

Kittery has grown the fastest since 2010 (+6.1%).

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	Seabrook	Kittery
People
Population	8,427Lowest	10,473Highest
Growth since 20102010 → 2020 census	-3.4%Lowest U.S.: +7.4%	+6.1%Highest U.S.: +7.4%
Median age	54±1.9Highest 39% above U.S.	46.8±2.3Lowest 20% above U.S.
Kids under 18	14.8%±3.1Highest U.S.: 22%	14.7%±2.9Lowest U.S.: 22%
	Seabrook and Kittery are within the Census margin of error here, so we can’t say which is really higher.
Age 65+	31.5%±5Highest U.S.: 17.2%	26.9%±4.9Lowest U.S.: 17.2%
	Seabrook and Kittery are within the Census margin of error here, so we can’t say which is really higher.
Bachelor’s degree+adults 25+	27.5%Lowest U.S.: 35.7%	46%Highest U.S.: 35.7%
Enrolled in collegeshare of residents	2.9%±1.3Lowest U.S.: 6.4%	4.5%±1.5Highest U.S.: 6.4%
	Kittery and Seabrook are within the Census margin of error here, so we can’t say which is really higher.
Cost of living
Household incomemedian	$84,349±$15kLowest 4% above U.S.	$93,728±$14kHighest 16% above U.S.
	Kittery and Seabrook are within the Census margin of error here, so we can’t say which is really higher.
Home valuemedian, owner-occupied	$443,500±$40kLowest 33% above U.S.	$468,500±$31kHighest 41% above U.S.
	Kittery and Seabrook are within the Census margin of error here, so we can’t say which is really higher.
Rentmedian gross, monthly	$1,542±$174Lowest 9% above U.S.	$1,716±$224Highest 21% above U.S.
	Kittery and Seabrook are within the Census margin of error here, so we can’t say which is really higher.
Property taxmedian, yearly	$5,785Highest 85% above U.S.	$4,518Lowest 45% above U.S.
Renters paying 30%+of income on rent	50.4%±10Highest U.S.: 51.1%	38.8%±14.9Lowest U.S.: 51.1%
	Seabrook and Kittery are within the Census margin of error here, so we can’t say which is really higher.
Below poverty line	12.1%Highest U.S.: 12.5%	6.4%Lowest U.S.: 12.5%
Housing
Homeownersof occupied homes	68.2%Highest U.S.: 65.2%	67.2%Lowest U.S.: 65.2%
Typical home builtmedian year	1986Highest 6 yrs newer than U.S.	1965Lowest 15 yrs older than U.S.
Getting to work
Average commuteone way	21 minHighest 21% below U.S.	20 minLowest 24% below U.S.
Work from home	10.5%±3.7Lowest U.S.: 15.1%	22.7%±7.2Highest U.S.: 15.1%
Schools
Public school scoresrank in state, math + reading	#114 of 120 in NH	#17 of 133 in ME
School district	Seabrook School District	Kittery Public Schools
High school in town	None in town	Robert W Traip Academy
Students per teacherat that high school	—	9.9
On TownTapestry
Old photos in Our Story	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.