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2026 Compare Cities People:
Arlington, VA vs Mill Valley, CA

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Highlights
- Mill Valley is 0% more densely populated than Arlington.
- People are 24.1% more likely to be married in Mill Valley.
- The Median Age is 12.8 years older in Mill Valley.
 Arlington, VAMill Valley, CAUnited States
 Population  Unlock14,240329,725,481
 Female Population49.7%  Unlock50.5%
 Male Population50.3%  Unlock49.5%
 Median Age  Unlock47.938.4
 space3
 Population - 2010197,467  Unlock309,327,143
 Population - 2000  Unlock13,600285,036,114
 Population - 1990170,936  Unlock251,960,433
 Pop. 2000 to Now  Unlock5.3%15.6%
 Pop. 1990 to Now40.9%  Unlock30.8%
 space4
 Population Density  Unlock2,989.793.4
 Land Area26.0  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Arlington, VAMill Valley, CAUnited States
 Age 0 to 45.6%  Unlock5.9%
 Age 5 to 9  Unlock5.8%6.1%
 Age 10 to 145.1%  Unlock6.6%
 Age 15 to 17  Unlock6.1%3.9%
 Age 18 to 202.0%  Unlock4.0%
 Age 21 to 24  Unlock1.5%5.2%
 Age 25 to 3423.4%  Unlock13.8%
 Age 35 to 44  Unlock12.2%12.9%
 Age 45 to 5412.8%  Unlock12.6%
 Age 55 to 59  Unlock7.8%6.7%
 Age 60 to 644.5%  Unlock6.3%
 Age 65 to 74  Unlock11.6%9.6%
 Age 75 to 842.9%  Unlock4.5%
 Age 85 and over  Unlock3.0%1.9%
 space1
 Race
 Arlington, VAMill Valley, CAUnited States
 White60.2%  Unlock59.4%
 Black  Unlock1.4%12.2%
 Asian10.2%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock1.0%0.4%
 Two or More Races4.3%  Unlock3.2%
 Hispanic  Unlock3.0%18.4%
 space2
 Marriage & Family
 Arlington, VAMill Valley, CAUnited States
 Married Population45.2%  Unlock49.8%
     Currently Married  Unlock55.6%48.0%
 Married but Separated1.1%  Unlock1.8%
 Single Population  Unlock43.9%50.2%
 Never Married44.0%  Unlock33.8%
 Divorced  Unlock12.5%10.8%
 Widowed3.0%  Unlock5.6%
 space5
 Household Size  Unlock2.522.60
 Households109,528  Unlock124,010,992
 Family Households  Unlock3,81480,755,759
     Married couple, w/children36.2%  Unlock30.5%
     Married couple, no children  Unlock49.5%42.9%
 Non Family Households59,559  Unlock43,255,233
     Single householder, w/children  Unlock9.8%15.8%
     Single householder, no children9.8%  Unlock10.8%
Voting
Reviews for Arlington    36 Reviews
Alexa · Arlington, VA
Great place, lots of outdoor activities and cultur
Over 3 years ago

Lived here 17 years, amazing  More

   |    Reply
jefe · Arlington, VA
If you an afford it, life is pretty good here
Over 4 years ago

Resident for 20 years. There is nothing hidden about Arlington. It is an affluent inner suburb of DC with a highly educated, mostly professional, population. The  More

   |    Reply
Tim · Arlington, VA
Convenient, Lovey, Expensive Washington Neighbor
Over 5 years ago

We've lived in Arlington for the past 7 years, and have enjoyed it but would prefer a less expensive, more open area. We live in a townhouse in Rosslyn, close to the  More

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Reviews for Mill Valley    7 Reviews
Thomas · Chatham, NJ
Mill Valley Tiburon wonderful
Over 5 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 16 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 17 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 Arlington, Virginia
Overview
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Learn More About Mill Valley, California
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