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2025 Compare Cities People:
Greenwich, CT vs Los Altos, CA

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Highlights
- Los Altos is 0% more densely populated than Greenwich.
- People are 12.0% more likely to be married in Los Altos.
- The Median Age is 2.9 years older in Los Altos.
 Greenwich, CTLos Altos, CAUnited States
 Population  Unlock31,562329,725,481
 Female Population51.4%  Unlock50.5%
 Male Population48.6%  Unlock49.5%
 Median Age  Unlock45.838.4
 space3
 Population - 201061,310  Unlock309,327,143
 Population - 2000  Unlock27,693285,036,114
 Population - 199058,441  Unlock251,960,433
 Pop. 2000 to Now  Unlock9.4%15.6%
 Pop. 1990 to Now7.4%  Unlock30.8%
 space4
 Population Density  Unlock4,869.993.4
 Land Area47.7  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Greenwich, CTLos Altos, CAUnited States
 Age 0 to 45.2%  Unlock5.9%
 Age 5 to 9  Unlock6.8%6.1%
 Age 10 to 148.0%  Unlock6.6%
 Age 15 to 17  Unlock5.4%3.9%
 Age 18 to 202.9%  Unlock4.0%
 Age 21 to 24  Unlock3.0%5.2%
 Age 25 to 347.4%  Unlock13.8%
 Age 35 to 44  Unlock10.9%12.9%
 Age 45 to 5416.1%  Unlock12.6%
 Age 55 to 59  Unlock6.2%6.7%
 Age 60 to 646.8%  Unlock6.3%
 Age 65 to 74  Unlock9.7%9.6%
 Age 75 to 845.1%  Unlock4.5%
 Age 85 and over  Unlock3.0%1.9%
 space1
 Race
 Greenwich, CTLos Altos, CAUnited States
 White73.0%  Unlock59.4%
 Black  Unlock0.8%12.2%
 Asian7.1%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.7%0.4%
 Two or More Races3.9%  Unlock3.2%
 Hispanic  Unlock5.8%18.4%
 space2
 Marriage & Family
 Greenwich, CTLos Altos, CAUnited States
 Married Population60.4%  Unlock49.8%
     Currently Married  Unlock67.3%48.0%
 Married but Separated0.9%  Unlock1.8%
 Single Population  Unlock32.3%50.2%
 Never Married27.5%  Unlock33.8%
 Divorced  Unlock5.2%10.8%
 Widowed4.7%  Unlock5.6%
 space5
 Household Size  Unlock2.902.60
 Households22,620  Unlock124,010,992
 Family Households  Unlock8,86980,755,759
     Married couple, w/children40.8%  Unlock30.5%
     Married couple, no children  Unlock45.6%42.9%
 Non Family Households5,916  Unlock43,255,233
     Single householder, w/children  Unlock3.7%15.8%
     Single householder, no children5.4%  Unlock10.8%
Voting
Reviews for Greenwich    2 Reviews
Christine · Cos Cob, CT
Cost of Living
Over 17 years ago

Cost of Living is very high. If you can afford it, this is a very nice place to  More

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Peter · Greenwich, CT
Greenwich - Nice but you pay
Over 18 years ago

Cost of living, especially utilities is high. Even have a 'special' gas surcharge at the pump for those living (and buying) in lower Fairfield County. At the same time  More

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Reviews for Los Altos    2 Reviews
Phyllis · Los Altos, CA
Expensive
Over 17 years ago

Expensive but worth  More

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Tony · Sunnyvale, CA
Quality of Life
Over 17 years ago

the quality of life here is very high however the cost of living is also high. extremely high as a matter of fact. I'd like to look at other communities that are less  More

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Learn More About Greenwich, Connecticut
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