2025 Compare Cities People:
Belmont, MA vs Arlington, MA

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Highlights
- Arlington is 0% more densely populated than Belmont.
- People are 11.0% less likely to be married in Arlington.
- The Median Age is 1.8 years younger in Arlington.
 Belmont, MAArlington, MAUnited States
 Population  Unlock46,045329,725,481
 Female Population52.8%  Unlock50.5%
 Male Population47.2%  Unlock49.5%
 Median Age  Unlock39.738.4
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 Population - 201024,700  Unlock309,327,143
 Population - 2000  Unlock42,389285,036,114
 Population - 199024,720  Unlock251,960,433
 Pop. 2000 to Now  Unlock6.6%15.6%
 Pop. 1990 to Now4.7%  Unlock30.8%
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 Population Density  Unlock8,947.793.4
 Land Area4.7  Unlock3,531,905.4
 Water Area  Unlock0.3264,836.8
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 Est. Total Population By Age
 Belmont, MAArlington, MAUnited States
 Age 0 to 46.3%  Unlock5.9%
 Age 5 to 9  Unlock5.6%6.1%
 Age 10 to 146.1%  Unlock6.6%
 Age 15 to 17  Unlock3.2%3.9%
 Age 18 to 202.3%  Unlock4.0%
 Age 21 to 24  Unlock3.4%5.2%
 Age 25 to 349.8%  Unlock13.8%
 Age 35 to 44  Unlock15.1%12.9%
 Age 45 to 5415.1%  Unlock12.6%
 Age 55 to 59  Unlock6.4%6.7%
 Age 60 to 645.6%  Unlock6.3%
 Age 65 to 74  Unlock9.5%9.6%
 Age 75 to 845.0%  Unlock4.5%
 Age 85 and over  Unlock1.9%1.9%
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 Race
 Belmont, MAArlington, MAUnited States
 White72.5%  Unlock59.4%
 Black  Unlock3.3%12.2%
 Asian18.2%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races3.9%  Unlock3.2%
 Hispanic  Unlock5.0%18.4%
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 Marriage & Family
 Belmont, MAArlington, MAUnited States
 Married Population64.4%  Unlock49.8%
     Currently Married  Unlock55.8%48.0%
 Married but Separated0.9%  Unlock1.8%
 Single Population  Unlock42.7%50.2%
 Never Married24.7%  Unlock33.8%
 Divorced  Unlock7.6%10.8%
 Widowed5.3%  Unlock5.6%
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 Household Size  Unlock2.372.60
 Households10,393  Unlock124,010,992
 Family Households  Unlock11,98280,755,759
     Married couple, w/children45.1%  Unlock30.5%
     Married couple, no children  Unlock41.4%42.9%
 Non Family Households2,837  Unlock43,255,233
     Single householder, w/children  Unlock8.7%15.8%
     Single householder, no children5.8%  Unlock10.8%
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