Chelmsford Flag

Chelmsford

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

Chelmsford is located in Middlesex County, Massachusetts. Chelmsford has a 2025 population of 37,310 . Chelmsford is currently growing at a rate of 0.97% annually and its population has increased by 2.55% since the most recent census, which recorded a population of 36,383 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. For every 100 females there are 95.2 males.

37.3K
Total Population
1,667
Density (mi²)
357 0.97%
Growth

Chelmsford Population

Chelmsford Population

Data after 2023 is projected based on recent change

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 and multiracial populations.

Population by Race

White (81.16%)

Asian (9.08%)

Two or more races (5.04%)

Other race (2.59%)

Black or African American (1.92%)

Native American (0.22%)

Race
Population
Percentage (of total)
White29,39581.16%
Asian3,2879.08%
Two or more races1,8265.04%
Other race9382.59%
Black or African American6951.92%
Native American790.22%

Chelmsford Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)