2025 Compare Cities People:
Marion, MA vs Chelmsford, MA

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Highlights
- Chelmsford is 0% more densely populated than Marion.
- People are 16.3% more likely to be married in Chelmsford.
- The Median Age is 6.9 years younger in Chelmsford.
 Marion, MAChelmsford, MAUnited States
 Population  Unlock36,271329,725,481
 Female Population50.1%  Unlock50.5%
 Male Population49.9%  Unlock49.5%
 Median Age  Unlock42.738.4
 space3
 Population - 20104,919  Unlock309,327,143
 Population - 2000  Unlock33,858285,036,114
 Population - 19904,496  Unlock251,960,433
 Pop. 2000 to Now  Unlock4.9%15.6%
 Pop. 1990 to Now15.4%  Unlock30.8%
 space4
 Population Density  Unlock1,621.493.4
 Land Area14.0  Unlock3,531,905.4
 Water Area  Unlock0.7264,836.8
 space
 Est. Total Population By Age
 Marion, MAChelmsford, MAUnited States
 Age 0 to 43.7%  Unlock5.9%
 Age 5 to 9  Unlock6.3%6.1%
 Age 10 to 146.4%  Unlock6.6%
 Age 15 to 17  Unlock3.3%3.9%
 Age 18 to 202.9%  Unlock4.0%
 Age 21 to 24  Unlock4.3%5.2%
 Age 25 to 346.2%  Unlock13.8%
 Age 35 to 44  Unlock12.6%12.9%
 Age 45 to 5417.1%  Unlock12.6%
 Age 55 to 59  Unlock8.3%6.7%
 Age 60 to 647.9%  Unlock6.3%
 Age 65 to 74  Unlock10.5%9.6%
 Age 75 to 846.3%  Unlock4.5%
 Age 85 and over  Unlock1.8%1.9%
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 Race
 Marion, MAChelmsford, MAUnited States
 White81.7%  Unlock59.4%
 Black  Unlock1.3%12.2%
 Asian1.5%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.7%0.4%
 Two or More Races9.6%  Unlock3.2%
 Hispanic  Unlock4.2%18.4%
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 Marriage & Family
 Marion, MAChelmsford, MAUnited States
 Married Population51.9%  Unlock49.8%
     Currently Married  Unlock59.2%48.0%
 Married but Separated1.5%  Unlock1.8%
 Single Population  Unlock39.7%50.2%
 Never Married29.6%  Unlock33.8%
 Divorced  Unlock8.0%10.8%
 Widowed6.1%  Unlock5.6%
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 Household Size  Unlock2.652.60
 Households1,967  Unlock124,010,992
 Family Households  Unlock9,86580,755,759
     Married couple, w/children27.6%  Unlock30.5%
     Married couple, no children  Unlock47.4%42.9%
 Non Family Households601  Unlock43,255,233
     Single householder, w/children  Unlock8.2%15.8%
     Single householder, no children7.2%  Unlock10.8%
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