What stands out worked out from the figures below

Merrimack has the most expensive homes ($459k 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	Merrimack	Union
People
Population	28,164Highest	2,663Lowest
Growth since 20102010 → 2020 census	+4.5%Lowest U.S.: +7.4%	+5.5%Highest U.S.: +7.4%
Median age	41.5±2.2Lowest 7% above U.S.	41.6±5.3Highest 7% above U.S.
	Union and Merrimack are within the Census margin of error here, so we can’t say which is really higher.
Kids under 18	22%±2.5Lowest U.S.: 22%	24.9%±4Highest U.S.: 22%
	Union and Merrimack are within the Census margin of error here, so we can’t say which is really higher.
Age 65+	16.8%±1.8Lowest U.S.: 17.2%	21.4%±3.1Highest U.S.: 17.2%
	Union and Merrimack are within the Census margin of error here, so we can’t say which is really higher.
Bachelor’s degree+adults 25+	50.2%Highest U.S.: 35.7%	34.4%Lowest U.S.: 35.7%
Enrolled in collegeshare of residents	5.1%±1.2Highest U.S.: 6.4%	3.5%±1.5Lowest U.S.: 6.4%
	Merrimack and Union are within the Census margin of error here, so we can’t say which is really higher.
Cost of living
Household incomemedian	$127,219±$16kHighest 58% above U.S.	$80,724±$9kLowest about the U.S. average
Home valuemedian, owner-occupied	$458,600±$15kHighest 38% above U.S.	$267,600±$42kLowest 20% below U.S.
Rentmedian gross, monthly	$1,932±$147Highest 37% above U.S.	$1,179±$452Lowest 17% below U.S.
Property taxmedian, yearly	$7,345Highest 135% above U.S.	$3,276Lowest 5% above U.S.
Renters paying 30%+of income on rent	34.9%±9.4Highest U.S.: 51.1%	24.6%±19.8Lowest U.S.: 51.1%
	Merrimack and Union are within the Census margin of error here, so we can’t say which is really higher.
Below poverty line	3%Lowest U.S.: 12.5%	10.2%Highest U.S.: 12.5%
Housing
Homeownersof occupied homes	88.9%Highest U.S.: 65.2%	85.9%Lowest U.S.: 65.2%
Typical home builtmedian year	1985Highest 5 yrs newer than U.S.	1979Lowest 1 yr older than U.S.
Getting to work
Average commuteone way	27 minLowest about the U.S. average	29 minHighest 11% above U.S.
Work from home	21%±3.3Highest U.S.: 15.1%	15.9%±5.3Lowest U.S.: 15.1%
	Merrimack 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	#58 of 120 in NH	—
School district	Merrimack School District	RSU 40/MSAD 40
High school in town	Merrimack High School	None in town
Students per teacherat that high school	12.5	—
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.