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2025 Compare Cities People:
Mill Valley, CA vs Greenwich, CT

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Highlights
- Greenwich is 0% more densely populated than Mill Valley.
- People are 7.7% more likely to be married in Greenwich.
- The Median Age is 5.0 years younger in Greenwich.
 Mill Valley, CAGreenwich, CTUnited States
 Population  Unlock63,455329,725,481
 Female Population52.5%  Unlock50.5%
 Male Population47.5%  Unlock49.5%
 Median Age  Unlock42.938.4
 space3
 Population - 201013,934  Unlock309,327,143
 Population - 2000  Unlock61,101285,036,114
 Population - 199013,038  Unlock251,960,433
 Pop. 2000 to Now  Unlock2.7%15.6%
 Pop. 1990 to Now9.9%  Unlock30.8%
 space4
 Population Density  Unlock1,330.293.4
 Land Area4.8  Unlock3,531,905.4
 Water Area  Unlock19.6264,836.8
 space
 Est. Total Population By Age
 Mill Valley, CAGreenwich, CTUnited States
 Age 0 to 42.9%  Unlock5.9%
 Age 5 to 9  Unlock7.7%6.1%
 Age 10 to 146.3%  Unlock6.6%
 Age 15 to 17  Unlock5.4%3.9%
 Age 18 to 203.4%  Unlock4.0%
 Age 21 to 24  Unlock3.4%5.2%
 Age 25 to 347.3%  Unlock13.8%
 Age 35 to 44  Unlock12.6%12.9%
 Age 45 to 5418.4%  Unlock12.6%
 Age 55 to 59  Unlock7.6%6.7%
 Age 60 to 647.1%  Unlock6.3%
 Age 65 to 74  Unlock9.5%9.6%
 Age 75 to 846.5%  Unlock4.5%
 Age 85 and over  Unlock2.2%1.9%
 space1
 Race
 Mill Valley, CAGreenwich, CTUnited States
 White83.0%  Unlock59.4%
 Black  Unlock2.4%12.2%
 Asian6.1%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.4%0.4%
 Two or More Races5.4%  Unlock3.2%
 Hispanic  Unlock13.1%18.4%
 space2
 Marriage & Family
 Mill Valley, CAGreenwich, CTUnited States
 Married Population56.1%  Unlock49.8%
     Currently Married  Unlock59.5%48.0%
 Married but Separated0.5%  Unlock1.8%
 Single Population  Unlock39.6%50.2%
 Never Married26.9%  Unlock33.8%
 Divorced  Unlock7.4%10.8%
 Widowed4.5%  Unlock5.6%
 space5
 Household Size  Unlock2.772.60
 Households5,622  Unlock124,010,992
 Family Households  Unlock16,70480,755,759
     Married couple, w/children35.2%  Unlock30.5%
     Married couple, no children  Unlock44.2%42.9%
 Non Family Households1,808  Unlock43,255,233
     Single householder, w/children  Unlock9.7%15.8%
     Single householder, no children5.6%  Unlock10.8%
Voting
Reviews for Mill Valley    7 Reviews
Thomas · Chatham, NJ
Mill Valley Tiburon wonderful
Over 4 years ago

I lived in southern Marin County for 20 years and lived it. Just moved  More

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chris · Mill Valley, CA
Pristine and Costly
Over 15 years ago

Mill Valley is a perfect place to live and raise a family, if you don't mind a cost of living index of 233. Don't distress - go mountain biking or hiking with  More

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Robbin · Mill Valley, CA
California
Over 16 years ago

Good weather all year around. Great public schools. Cost of living very high. Crime low wonderful outdoor activities nearby like hiking, beaches,  More

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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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Learn More About Mill Valley, California
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