Chelmsford town Population

2010–2026

39,269

2026 projection

8% since 2020 (increase)

010K20K30K40K201020122014201620182020202220242026

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Chelmsford town. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202639,269+7201.87%
202538,549+7201.90%
202437,829+1,0262.79%
202336,803+2970.81%
202236,506+3911.08%
202136,115-2550.70%
202036,370+9792.77%
201935,391+1860.53%
201835,205+1850.53%
201735,020-60.02%

Showing 10 of 17 years.

Chelmsford town Demographics

41.6median age

Median age

Female43 yrs
Male40.5 yrs

Adults

28,563
6,590 seniors · 23%21,973 other adults

Sex

Female 51.4% · 18,721Male 48.6% · 17,725

Population by age

MaleFemale85+ years, male: 25285+ years, female: 44980–84 years, male: 42580–84 years, female: 54275–79 years, male: 47875–79 years, female: 77870–74 years, male: 69170–74 years, female: 82765–69 years, male: 1,11965–69 years, female: 1,02960–64 years, male: 1,28060–64 years, female: 1,45855–59 years, male: 1,14055–59 years, female: 1,26050–54 years, male: 1,45050–54 years, female: 1,62145–49 years, male: 1,07745–49 years, female: 1,06840–44 years, male: 1,07340–44 years, female: 88535–39 years, male: 1,22535–39 years, female: 1,43230–34 years, male: 1,01530–34 years, female: 1,43025–29 years, male: 81225–29 years, female: 92820–24 years, male: 1,11520–24 years, female: 87015–19 years, male: 1,41415–19 years, female: 98310–14 years, male: 91910–14 years, female: 1,1525–9 years, male: 1,1755–9 years, female: 1,2100–4 years, male: 1,0650–4 years, female: 79985+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

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U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 364 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Chelmsford town Income

$140,629median household income

Median household income

$140,629

Half of households earn more, half earn less

Median earnings

$83,660

Typical yearly pay for a worker 25 or older.

Poverty rate

4.7%

About 1 in 21 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Chelmsford town Marital Status

56% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married56%59%53%
Never married29%32%26%
Divorced8%5%11%
Widowed6%3%9%
Separated2%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year