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2025 Compare Cities People:
Sun Valley, ID vs Mill Valley, CA

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Highlights
- Mill Valley is 0% more densely populated than Sun Valley.
- People are 14.9% more likely to be married in Mill Valley.
- The Median Age is 10.1 years younger in Mill Valley.
 Sun Valley, IDMill Valley, CAUnited States
 Population  Unlock14,240329,725,481
 Female Population52.7%  Unlock50.5%
 Male Population47.3%  Unlock49.5%
 Median Age  Unlock47.938.4
 space3
 Population - 20101,405  Unlock309,327,143
 Population - 2000  Unlock13,600285,036,114
 Population - 1990938  Unlock251,960,433
 Pop. 2000 to Now  Unlock5.3%15.6%
 Pop. 1990 to Now60.2%  Unlock30.8%
 space4
 Population Density  Unlock2,989.793.4
 Land Area9.6  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Sun Valley, IDMill Valley, CAUnited States
 Age 0 to 42.5%  Unlock5.9%
 Age 5 to 9  Unlock5.8%6.1%
 Age 10 to 140.0%  Unlock6.6%
 Age 15 to 17  Unlock6.1%3.9%
 Age 18 to 203.4%  Unlock4.0%
 Age 21 to 24  Unlock1.5%5.2%
 Age 25 to 343.4%  Unlock13.8%
 Age 35 to 44  Unlock12.2%12.9%
 Age 45 to 5417.5%  Unlock12.6%
 Age 55 to 59  Unlock7.8%6.7%
 Age 60 to 646.0%  Unlock6.3%
 Age 65 to 74  Unlock11.6%9.6%
 Age 75 to 848.9%  Unlock4.5%
 Age 85 and over  Unlock3.0%1.9%
 space1
 Race
 Sun Valley, IDMill Valley, CAUnited States
 White83.2%  Unlock59.4%
 Black  Unlock1.4%12.2%
 Asian0.4%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock1.0%0.4%
 Two or More Races5.1%  Unlock3.2%
 Hispanic  Unlock3.0%18.4%
 space2
 Marriage & Family
 Sun Valley, IDMill Valley, CAUnited States
 Married Population48.8%  Unlock49.8%
     Currently Married  Unlock55.6%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock43.9%50.2%
 Never Married23.5%  Unlock33.8%
 Divorced  Unlock12.5%10.8%
 Widowed4.5%  Unlock5.6%
 space5
 Household Size  Unlock2.522.60
 Households513  Unlock124,010,992
 Family Households  Unlock3,81480,755,759
     Married couple, w/children16.1%  Unlock30.5%
     Married couple, no children  Unlock49.5%42.9%
 Non Family Households264  Unlock43,255,233
     Single householder, w/children  Unlock9.8%15.8%
     Single householder, no children3.6%  Unlock10.8%
Voting
Reviews for Sun Valley    5 Reviews
BLT · Sun Valley, ID
Sun Valley - Retirement Community for the Rich
Over 15 years ago

Young people living in Sun Valley, unless they have a trust fund can expect to have a difficult time here. The average age seems to be approx 78. Any business that is  More

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Cynthia · Ketchum, ID
Sun Valley....a love/hate relationship!
Over 18 years ago

Absolutely beautiful. Nice people. Amazing skiing...all types of recreation for anyone and everyone. Summer temperatures are perfect. It's sunny more than 250 days  More

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Bob · Sun Valley, ID
short seasons
Over 19 years ago

Winters are long, and summers can be short!!! The physcial beauty of the area is unbeatable,  More

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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

   |    Reply
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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Learn More About Sun Valley, Idaho
Overview
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Learn More About Mill Valley, California
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