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2025 Compare Cities People:
Cos Cob, CT vs Country Knolls, NY

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Highlights
- Country Knolls is 0% more densely populated than Cos Cob.
- People are 3.9% more likely to be married in Country Knolls.
- The Median Age is 3.3 years older in Country Knolls.
 Cos Cob, CTCountry Knolls, NYUnited States
 Population  Unlock5,491329,725,481
 Female Population51.1%  Unlock50.5%
 Male Population48.9%  Unlock49.5%
 Median Age  Unlock44.438.4
 space3
 Population - 20106,126  Unlock309,327,143
 Population - 2000  Unlock2,155285,036,114
 Population - 19906,511  Unlock251,960,433
 Pop. 2000 to Now  Unlock-2.5%15.6%
 Pop. 1990 to Now4.7%  Unlock30.8%
 space4
 Population Density  Unlock3,470.993.4
 Land Area2.1  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Cos Cob, CTCountry Knolls, NYUnited States
 Age 0 to 47.0%  Unlock5.9%
 Age 5 to 9  Unlock6.1%6.1%
 Age 10 to 146.5%  Unlock6.6%
 Age 15 to 17  Unlock8.3%3.9%
 Age 18 to 202.5%  Unlock4.0%
 Age 21 to 24  Unlock3.5%5.2%
 Age 25 to 348.8%  Unlock13.8%
 Age 35 to 44  Unlock9.1%12.9%
 Age 45 to 5415.3%  Unlock12.6%
 Age 55 to 59  Unlock8.5%6.7%
 Age 60 to 646.0%  Unlock6.3%
 Age 65 to 74  Unlock6.8%9.6%
 Age 75 to 843.2%  Unlock4.5%
 Age 85 and over  Unlock1.6%1.9%
 space1
 Race
 Cos Cob, CTCountry Knolls, NYUnited States
 White74.9%  Unlock59.4%
 Black  Unlock3.4%12.2%
 Asian5.4%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock1.5%0.4%
 Two or More Races7.2%  Unlock3.2%
 Hispanic  Unlock1.4%18.4%
 space2
 Marriage & Family
 Cos Cob, CTCountry Knolls, NYUnited States
 Married Population58.5%  Unlock49.8%
     Currently Married  Unlock58.4%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock39.2%50.2%
 Never Married28.8%  Unlock33.8%
 Divorced  Unlock6.1%10.8%
 Widowed3.4%  Unlock5.6%
 space5
 Household Size  Unlock2.682.60
 Households2,572  Unlock124,010,992
 Family Households  Unlock1,54680,755,759
     Married couple, w/children44.3%  Unlock30.5%
     Married couple, no children  Unlock44.0%42.9%
 Non Family Households670  Unlock43,255,233
     Single householder, w/children  Unlock13.3%15.8%
     Single householder, no children3.6%  Unlock10.8%
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Learn More About Cos Cob, Connecticut
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Learn More About Country Knolls, New York
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