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2025 Compare Cities People:
San Mateo, CA vs Mill Valley, CA

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Highlights
- Mill Valley is 0% more densely populated than San Mateo.
- People are 6.7% more likely to be married in Mill Valley.
- The Median Age is 10.2 years older in Mill Valley.
 San Mateo, CAMill Valley, CAUnited States
 Population  Unlock14,240329,725,481
 Female Population50.4%  Unlock50.5%
 Male Population49.6%  Unlock49.5%
 Median Age  Unlock47.938.4
 space3
 Population - 201097,256  Unlock309,327,143
 Population - 2000  Unlock13,600285,036,114
 Population - 199085,486  Unlock251,960,433
 Pop. 2000 to Now  Unlock5.3%15.6%
 Pop. 1990 to Now19.8%  Unlock30.8%
 space4
 Population Density  Unlock2,989.793.4
 Land Area12.2  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 San Mateo, CAMill Valley, CAUnited States
 Age 0 to 46.7%  Unlock5.9%
 Age 5 to 9  Unlock5.8%6.1%
 Age 10 to 145.7%  Unlock6.6%
 Age 15 to 17  Unlock6.1%3.9%
 Age 18 to 202.6%  Unlock4.0%
 Age 21 to 24  Unlock1.5%5.2%
 Age 25 to 3417.5%  Unlock13.8%
 Age 35 to 44  Unlock12.2%12.9%
 Age 45 to 5412.7%  Unlock12.6%
 Age 55 to 59  Unlock7.8%6.7%
 Age 60 to 645.7%  Unlock6.3%
 Age 65 to 74  Unlock11.6%9.6%
 Age 75 to 844.8%  Unlock4.5%
 Age 85 and over  Unlock3.0%1.9%
 space1
 Race
 San Mateo, CAMill Valley, CAUnited States
 White40.9%  Unlock59.4%
 Black  Unlock1.4%12.2%
 Asian25.2%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander1.7%  Unlock0.2%
 Other  Unlock1.0%0.4%
 Two or More Races5.5%  Unlock3.2%
 Hispanic  Unlock3.0%18.4%
 space2
 Marriage & Family
 San Mateo, CAMill Valley, CAUnited States
 Married Population52.6%  Unlock49.8%
     Currently Married  Unlock55.6%48.0%
 Married but Separated1.2%  Unlock1.8%
 Single Population  Unlock43.9%50.2%
 Never Married33.0%  Unlock33.8%
 Divorced  Unlock12.5%10.8%
 Widowed5.6%  Unlock5.6%
 space5
 Household Size  Unlock2.522.60
 Households40,233  Unlock124,010,992
 Family Households  Unlock3,81480,755,759
     Married couple, w/children35.1%  Unlock30.5%
     Married couple, no children  Unlock49.5%42.9%
 Non Family Households14,813  Unlock43,255,233
     Single householder, w/children  Unlock9.8%15.8%
     Single householder, no children11.3%  Unlock10.8%
Voting
Reviews for San Mateo    12 Reviews
Rowan · San Mateo, CA
Beautiful, family friendly,great sun and food
Over 7 years ago

I have lived in San Mateo since 2013. It has seen tremendous growth, lots of new restaurants which have become progressively more high-end though there is ample  More

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J · San Mateo, CA
Los Angeles Suburb by the Bay
Over 7 years ago

I'm a native of California. I have lived in the southern part of the state and the northern part of the state for most of my life. I have spent the last 29 years in  More

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Elizabeth · San Mateo, CA
A comfortable place
Over 15 years ago

San Mateo has a diverse mix of people, a pleasant climate, a very pleasant downtown park with lots going on, and pretty much whatever you need handy. It's not far to  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

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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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Learn More About San Mateo, California
Overview
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Learn More About Mill Valley, California
Overview
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