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2026 Compare Cities People:
Mill Valley, CA vs Katy, TX

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Highlights
- Katy is 0% more densely populated than Mill Valley.
- People are 17.4% more likely to be married in Katy.
- The Median Age is 8.2 years younger in Katy.
 Mill Valley, CAKaty, TXUnited States
 Population  Unlock21,926329,725,481
 Female Population52.5%  Unlock50.5%
 Male Population47.5%  Unlock49.5%
 Median Age  Unlock39.738.4
 space3
 Population - 201013,934  Unlock309,327,143
 Population - 2000  Unlock11,775285,036,114
 Population - 199013,038  Unlock251,960,433
 Pop. 2000 to Now  Unlock102.9%15.6%
 Pop. 1990 to Now9.9%  Unlock30.8%
 space4
 Population Density  Unlock1,508.593.4
 Land Area4.8  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Mill Valley, CAKaty, TXUnited States
 Age 0 to 42.9%  Unlock5.9%
 Age 5 to 9  Unlock9.2%6.1%
 Age 10 to 146.3%  Unlock6.6%
 Age 15 to 17  Unlock3.5%3.9%
 Age 18 to 203.4%  Unlock4.0%
 Age 21 to 24  Unlock3.9%5.2%
 Age 25 to 347.3%  Unlock13.8%
 Age 35 to 44  Unlock14.1%12.9%
 Age 45 to 5418.4%  Unlock12.6%
 Age 55 to 59  Unlock5.6%6.7%
 Age 60 to 647.1%  Unlock6.3%
 Age 65 to 74  Unlock8.2%9.6%
 Age 75 to 846.5%  Unlock4.5%
 Age 85 and over  Unlock1.3%1.9%
 space1
 Race
 Mill Valley, CAKaty, TXUnited States
 White83.0%  Unlock59.4%
 Black  Unlock11.2%12.2%
 Asian6.1%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock1.1%0.4%
 Two or More Races5.4%  Unlock3.2%
 Hispanic  Unlock23.7%18.4%
 space2
 Marriage & Family
 Mill Valley, CAKaty, TXUnited States
 Married Population56.1%  Unlock49.8%
     Currently Married  Unlock63.2%48.0%
 Married but Separated0.5%  Unlock1.8%
 Single Population  Unlock34.1%50.2%
 Never Married26.9%  Unlock33.8%
 Divorced  Unlock9.8%10.8%
 Widowed4.5%  Unlock5.6%
 space5
 Household Size  Unlock3.072.60
 Households5,622  Unlock124,010,992
 Family Households  Unlock5,65380,755,759
     Married couple, w/children35.2%  Unlock30.5%
     Married couple, no children  Unlock45.5%42.9%
 Non Family Households1,808  Unlock43,255,233
     Single householder, w/children  Unlock7.1%15.8%
     Single householder, no children5.6%  Unlock10.8%
Voting
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

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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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Reviews for Katy    24 Reviews
Sarah · Tucker, GA
Family friendly
Over 2 years ago

Katy is so nice. It is spread out in the typical Houston way, but I really enjoyed all of the Asian restaurants, shopping, and churches. Great place to raise a family.  More

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John · Santa Clarita, CA
Katy Resident
Over 5 years ago

Lived here my entire life, Great  More

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Betty  · Katy, TX
Harmony Science Academy West Houston
Over 10 years ago

My kids has been it this school since it opened. It was great at first until they kept changing hands in principle. They had great plans but never get carried out. The  More

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Learn More About Mill Valley, California
Overview
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