Arlington

County:: Middlesex County
County Seat:: No
Area (mi²):: 5.142
State:: Massachusetts

Arlington is a CDP located in Middlesex County, Massachusetts. Arlington has a 2025 population of 46,671. Arlington is currently growing at a rate of 0.55% annually and its population has increased by 2.85% since the most recent census, which recorded a population of 45,379 in 2020.

The average household income in Arlington is $190,932 with a poverty rate of 5.4%. The median age in Arlington is 41.3 years: 39.7 years for males, and 42.8 years for females.

Demographics

The racial composition of Arlington includes 76.47% White, 12.1% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Asian

Two or more races

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	35,186	76.47%
Asian	5,570	12.1%
Two or more races	3,250	7.06%
Black or African American	1,163	2.53%
Other race	774	1.68%
Native American	58	0.13%
Native Hawaiian or Pacific Islander	14	0.03%

Arlington Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Arlington's average per capita income is $92,461. Household income levels show a median of $141,440. The poverty rate stands at 5.4%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$215,863	-
Families	$188,629	$241,587
Households	$141,440	$190,932
Non Families	$82,411	$113,473

$92,461

Average Income

$141,440

Median Household Income

5.4%

Poverty Rate