2025 Compare Cities People:
Walnut, CA vs San Mateo, CA

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Highlights
- San Mateo is 0% more densely populated than Walnut.
- People are 12.6% less likely to be married in San Mateo.
- The Median Age is 8.1 years younger in San Mateo.
 Walnut, CASan Mateo, CAUnited States
 Population  Unlock105,087329,725,481
 Female Population51.4%  Unlock50.5%
 Male Population48.6%  Unlock49.5%
 Median Age  Unlock37.738.4
 space3
 Population - 201029,222  Unlock309,327,143
 Population - 2000  Unlock92,482285,036,114
 Population - 199029,105  Unlock251,960,433
 Pop. 2000 to Now  Unlock10.7%15.6%
 Pop. 1990 to Now0.8%  Unlock30.8%
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 Population Density  Unlock8,632.893.4
 Land Area9.0  Unlock3,531,905.4
 Water Area  Unlock3.7264,836.8
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 Est. Total Population By Age
 Walnut, CASan Mateo, CAUnited States
 Age 0 to 44.2%  Unlock5.9%
 Age 5 to 9  Unlock5.6%6.1%
 Age 10 to 146.4%  Unlock6.6%
 Age 15 to 17  Unlock2.7%3.9%
 Age 18 to 202.3%  Unlock4.0%
 Age 21 to 24  Unlock4.1%5.2%
 Age 25 to 3412.2%  Unlock13.8%
 Age 35 to 44  Unlock15.4%12.9%
 Age 45 to 5412.5%  Unlock12.6%
 Age 55 to 59  Unlock5.8%6.7%
 Age 60 to 648.6%  Unlock6.3%
 Age 65 to 74  Unlock8.0%9.6%
 Age 75 to 845.5%  Unlock4.5%
 Age 85 and over  Unlock2.8%1.9%
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 Race
 Walnut, CASan Mateo, CAUnited States
 White9.8%  Unlock59.4%
 Black  Unlock1.9%12.2%
 Asian65.2%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.6%  Unlock0.2%
 Other  Unlock0.6%0.4%
 Two or More Races2.6%  Unlock3.2%
 Hispanic  Unlock24.1%18.4%
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 Marriage & Family
 Walnut, CASan Mateo, CAUnited States
 Married Population60.2%  Unlock49.8%
     Currently Married  Unlock51.3%48.0%
 Married but Separated1.2%  Unlock1.8%
 Single Population  Unlock47.4%50.2%
 Never Married29.5%  Unlock33.8%
 Divorced  Unlock8.9%10.8%
 Widowed4.9%  Unlock5.6%
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 Household Size  Unlock2.582.60
 Households8,663  Unlock124,010,992
 Family Households  Unlock25,42080,755,759
     Married couple, w/children27.8%  Unlock30.5%
     Married couple, no children  Unlock43.3%42.9%
 Non Family Households1,117  Unlock43,255,233
     Single householder, w/children  Unlock10.4%15.8%
     Single householder, no children11.6%  Unlock10.8%
Reviews for Walnut    3 Reviews

Over 5 years ago

Lived here for nearly seven years ...First - This is  More

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Over 17 years ago

Nice place to raise family. Excellent Schools and great  More

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Over 19 years ago

It is way too expensive here! A one bedroom apartment is about 1200 / month here and houses average $500,000 for a "fixer upper". Great schooll district and very nice  More

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Reviews for San Mateo    12 Reviews

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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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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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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