2025 Compare Cities People:
Addison, NY vs Portola Valley, CA

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Highlights
- Portola Valley is 0% more densely populated than Addison.
- People are 16.0% more likely to be married in Portola Valley.
- The Median Age is 19.9 years older in Portola Valley.
 Addison, NYPortola Valley, CAUnited States
 Population  Unlock4,458329,725,481
 Female Population46.8%  Unlock50.5%
 Male Population53.2%  Unlock49.5%
 Median Age  Unlock55.638.4
 space3
 Population - 20102,606  Unlock309,327,143
 Population - 2000  Unlock4,462285,036,114
 Population - 19902,645  Unlock251,960,433
 Pop. 2000 to Now  Unlock1.5%15.6%
 Pop. 1990 to Now-7.3%  Unlock30.8%
 space4
 Population Density  Unlock490.093.4
 Land Area25.5  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Addison, NYPortola Valley, CAUnited States
 Age 0 to 48.1%  Unlock5.9%
 Age 5 to 9  Unlock7.3%6.1%
 Age 10 to 148.4%  Unlock6.6%
 Age 15 to 17  Unlock4.1%3.9%
 Age 18 to 204.0%  Unlock4.0%
 Age 21 to 24  Unlock3.1%5.2%
 Age 25 to 3411.2%  Unlock13.8%
 Age 35 to 44  Unlock7.2%12.9%
 Age 45 to 5411.5%  Unlock12.6%
 Age 55 to 59  Unlock8.1%6.7%
 Age 60 to 643.1%  Unlock6.3%
 Age 65 to 74  Unlock15.7%9.6%
 Age 75 to 843.6%  Unlock4.5%
 Age 85 and over  Unlock9.6%1.9%
 space1
 Race
 Addison, NYPortola Valley, CAUnited States
 White98.8%  Unlock59.4%
 Black  Unlock0.1%12.2%
 Asian0.0%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock1.1%0.4%
 Two or More Races0.2%  Unlock3.2%
 Hispanic  Unlock11.9%18.4%
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 Marriage & Family
 Addison, NYPortola Valley, CAUnited States
 Married Population55.4%  Unlock49.8%
     Currently Married  Unlock64.0%48.0%
 Married but Separated3.9%  Unlock1.8%
 Single Population  Unlock35.7%50.2%
 Never Married26.7%  Unlock33.8%
 Divorced  Unlock10.6%10.8%
 Widowed5.9%  Unlock5.6%
 space5
 Household Size  Unlock2.662.60
 Households965  Unlock124,010,992
 Family Households  Unlock1,18080,755,759
     Married couple, w/children36.5%  Unlock30.5%
     Married couple, no children  Unlock66.9%42.9%
 Non Family Households335  Unlock43,255,233
     Single householder, w/children  Unlock5.3%15.8%
     Single householder, no children4.6%  Unlock10.8%
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