What stands out worked out from the figures below

Castine has the most expensive homes ($604k median).

Union has grown the fastest since 2010 (+5.5%).

Castine is a college town. 47.7% of residents are enrolled in college, which pulls its median age, poverty rate and renter figures away from what a year-round family would see.

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	Castine	Union
People
Population	1,362Lowest	2,663Highest
Growth since 20102010 → 2020 census	-3.4%Lowest ME: +2.6%	+5.5%Highest ME: +2.6%
Median age	21.2±0.7Lowest 53% below ME	41.6±5.3Highest 7% below ME
Kids under 18	9.5%±4Lowest ME: 18.1%	24.9%±4Highest ME: 18.1%
Age 65+	19.9%±4.1Lowest ME: 22.4%	21.4%±3.1Highest ME: 22.4%
	Union and Castine are within the Census margin of error here, so we can’t say which is really higher.
Bachelor’s degree+adults 25+	74.5%Highest ME: 36.2%	34.4%Lowest ME: 36.2%
Enrolled in collegeshare of residents	47.7%±7.7Highest ME: 5.8%	3.5%±1.5Lowest ME: 5.8%
Cost of living
Household incomemedian	$113,750±$26kHighest 52% above ME	$80,724±$9kLowest 8% above ME
	Castine and Union are within the Census margin of error here, so we can’t say which is really higher.
Home valuemedian, owner-occupied	$603,500±$114kHighest 103% above ME	$267,600±$42kLowest 10% below ME
Rentmedian gross, monthly	$1,105±$104Lowest about the ME average	$1,179±$452Highest 4% above ME
	Union and Castine are within the Census margin of error here, so we can’t say which is really higher.
Property taxmedian, yearly	$4,250Highest 40% above ME	$3,276Lowest 8% above ME
Renters paying 30%+of income on rent	60.3%±56Highest ME: 48.4%	24.6%±19.8Lowest ME: 48.4%
	Castine and Union are within the Census margin of error here, so we can’t say which is really higher.
Below poverty line	14.1%Highest ME: 10.7%	10.2%Lowest ME: 10.7%
Housing
Homeownersof occupied homes	80.4%Lowest ME: 74.3%	85.9%Highest ME: 74.3%
Typical home builtmedian year	1974Lowest 3 yrs older than ME	1979Highest 2 yrs newer than ME
Getting to work
Average commuteone way	14 minLowest 42% below ME	29 minHighest 20% above ME
Work from home	11.7%±10.6Lowest ME: 15.9%	15.9%±5.3Highest ME: 15.9%
	Union and Castine are within the Census margin of error here, so we can’t say which is really higher.
Schools
School district	Castine Public Schools	RSU 40/MSAD 40
High school in town	None in town	None in town
On TownTapestry
Old photos in History	None yet	None yet

ME 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.