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2025 Compare Cities People:
Darien, CT vs Old Greenwich, CT

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Highlights
- Old Greenwich is 0% more densely populated than Darien.
- People are 5.0% more likely to be married in Old Greenwich.
- The Median Age is 0.7 years older in Old Greenwich.
 Darien, CTOld Greenwich, CTUnited States
 Population  Unlock6,929329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock40.638.4
 space3
 Population - 201020,752  Unlock309,327,143
 Population - 2000  Unlock6,496285,036,114
 Population - 199018,196  Unlock251,960,433
 Pop. 2000 to Now  Unlock5.3%15.6%
 Pop. 1990 to Now19.2%  Unlock30.8%
 space4
 Population Density  Unlock3,473.293.4
 Land Area12.7  Unlock3,531,905.4
 Water Area  Unlock1.5264,836.8
 space
 Est. Total Population By Age
 Darien, CTOld Greenwich, CTUnited States
 Age 0 to 46.4%  Unlock5.9%
 Age 5 to 9  Unlock13.0%6.1%
 Age 10 to 1410.4%  Unlock6.6%
 Age 15 to 17  Unlock5.6%3.9%
 Age 18 to 203.4%  Unlock4.0%
 Age 21 to 24  Unlock2.0%5.2%
 Age 25 to 345.3%  Unlock13.8%
 Age 35 to 44  Unlock17.7%12.9%
 Age 45 to 5416.4%  Unlock12.6%
 Age 55 to 59  Unlock6.8%6.7%
 Age 60 to 646.4%  Unlock6.3%
 Age 65 to 74  Unlock8.5%9.6%
 Age 75 to 843.1%  Unlock4.5%
 Age 85 and over  Unlock2.0%1.9%
 space1
 Race
 Darien, CTOld Greenwich, CTUnited States
 White84.8%  Unlock59.4%
 Black  Unlock0.5%12.2%
 Asian6.1%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.6%0.4%
 Two or More Races3.1%  Unlock3.2%
 Hispanic  Unlock8.4%18.4%
 space2
 Marriage & Family
 Darien, CTOld Greenwich, CTUnited States
 Married Population67.1%  Unlock49.8%
     Currently Married  Unlock69.8%48.0%
 Married but Separated1.8%  Unlock1.8%
 Single Population  Unlock29.5%50.2%
 Never Married24.4%  Unlock33.8%
 Divorced  Unlock5.9%10.8%
 Widowed4.2%  Unlock5.6%
 space5
 Household Size  Unlock3.012.60
 Households6,978  Unlock124,010,992
 Family Households  Unlock1,76580,755,759
     Married couple, w/children50.4%  Unlock30.5%
     Married couple, no children  Unlock32.5%42.9%
 Non Family Households1,235  Unlock43,255,233
     Single householder, w/children  Unlock4.9%15.8%
     Single householder, no children6.8%  Unlock10.8%
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Learn More About Darien, Connecticut
Overview
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Learn More About Old Greenwich, Connecticut
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