What stands out worked out from the figures below

Charleston has the oldest population (median age 58.4).

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

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	Charleston	Union
People
Population	936Lowest	2,663Highest
Growth since 20102010 → 2020 census	-0.2%Lowest U.S.: +7.4%	+5.5%Highest U.S.: +7.4%
Median age	58.4±9.3Highest 50% above U.S.	41.6±5.3Lowest 7% above U.S.
Kids under 18	11.2%±4.2Lowest U.S.: 22%	24.9%±4Highest U.S.: 22%
Age 65+	37.7%±8.6Highest U.S.: 17.2%	21.4%±3.1Lowest U.S.: 17.2%
Bachelor’s degree+adults 25+	13.6%Lowest U.S.: 35.7%	34.4%Highest U.S.: 35.7%
Enrolled in collegeshare of residents	3.7%±2.3Highest U.S.: 6.4%	3.5%±1.5Lowest U.S.: 6.4%
	Charleston and Union are within the Census margin of error here, so we can’t say which is really higher.
Cost of living
Household incomemedian	$49,286±$17kLowest 39% below U.S.	$80,724±$9kHighest about the U.S. average
Home valuemedian, owner-occupied	$238,000±$53kLowest 28% below U.S.	$267,600±$42kHighest 20% below U.S.
	Union and Charleston are within the Census margin of error here, so we can’t say which is really higher.
Rentmedian gross, monthly	$979±$444Lowest 31% below U.S.	$1,179±$452Highest 17% below U.S.
	Union and Charleston are within the Census margin of error here, so we can’t say which is really higher.
Property taxmedian, yearly	$3,750Highest 20% above U.S.	$3,276Lowest 5% above U.S.
Renters paying 30%+of income on rent	32.7%±26.4Highest U.S.: 51.1%	24.6%±19.8Lowest U.S.: 51.1%
	Charleston and Union are within the Census margin of error here, so we can’t say which is really higher.
Below poverty line	12.3%Highest U.S.: 12.5%	10.2%Lowest U.S.: 12.5%
Housing
Homeownersof occupied homes	87.1%Highest U.S.: 65.2%	85.9%Lowest U.S.: 65.2%
Typical home builtmedian year	1980Highest same as U.S.	1979Lowest 1 yr older than U.S.
Getting to work
Average commuteone way	26 minLowest about the U.S. average	29 minHighest 11% above U.S.
Work from home	18.7%±7.1Highest U.S.: 15.1%	15.9%±5.3Lowest U.S.: 15.1%
	Charleston and Union are within the Census margin of error here, so we can’t say which is really higher.
Schools
School district	Charleston School District	RSU 40/MSAD 40
High school in town	None in town	None in town
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.