Chelmsford

County:: Middlesex County
County Seat:: No
Area (mi²):: 22.382
State:: Massachusetts

Chelmsford is located in Middlesex County, Massachusetts. Chelmsford has a 2025 population of 36,352. Chelmsford is currently growing at a rate of 0.24% annually but its population has decreased by -0.08% since the most recent census, which recorded a population of 36,382 in 2020.

The average household income in Chelmsford is $161,805 with a poverty rate of 4.26%. The median age in Chelmsford is 42.8 years: 42.1 years for males, and 43.4 years for females.

Demographics

The racial composition of Chelmsford includes 81.16% White, 9.08% Asian, and smaller percentages for other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Asian

Two or more races

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	29,395	81.16%
Asian	3,287	9.08%
Two or more races	1,826	5.04%
Other race	938	2.59%
Black or African American	695	1.92%
Native American	79	0.22%
Native Hawaiian or Pacific Islander	0	0%

Chelmsford Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Chelmsford's average per capita income is $85,423. Household income levels show a median of $140,519. The poverty rate stands at 4.26%.

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	$177,155	-
Families	$162,740	$187,440
Households	$140,519	$161,805
Non Families	$64,222	$85,198

$85,423

Average Income

$140,519

Median Household Income

4.26%

Poverty Rate