2025 Compare Cities People:
Santa Monica, CA vs Diamond Bar, CA

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Highlights
- Diamond Bar is 0% more densely populated than Santa Monica.
- People are 43.1% more likely to be married in Diamond Bar.
- The Median Age is 2.3 years older in Diamond Bar.
 Santa Monica, CADiamond Bar, CAUnited States
 Population  Unlock55,339329,725,481
 Female Population50.6%  Unlock50.5%
 Male Population49.4%  Unlock49.5%
 Median Age  Unlock43.738.4
 space3
 Population - 201089,788  Unlock309,327,143
 Population - 2000  Unlock56,287285,036,114
 Population - 199086,905  Unlock251,960,433
 Pop. 2000 to Now  Unlock-2.5%15.6%
 Pop. 1990 to Now3.6%  Unlock30.8%
 space4
 Population Density  Unlock3,721.593.4
 Land Area8.4  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Santa Monica, CADiamond Bar, CAUnited States
 Age 0 to 44.9%  Unlock5.9%
 Age 5 to 9  Unlock5.4%6.1%
 Age 10 to 143.7%  Unlock6.6%
 Age 15 to 17  Unlock3.4%3.9%
 Age 18 to 201.9%  Unlock4.0%
 Age 21 to 24  Unlock4.1%5.2%
 Age 25 to 3419.1%  Unlock13.8%
 Age 35 to 44  Unlock12.4%12.9%
 Age 45 to 5413.5%  Unlock12.6%
 Age 55 to 59  Unlock8.2%6.7%
 Age 60 to 646.4%  Unlock6.3%
 Age 65 to 74  Unlock12.6%9.6%
 Age 75 to 845.3%  Unlock4.5%
 Age 85 and over  Unlock1.8%1.9%
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 Race
 Santa Monica, CADiamond Bar, CAUnited States
 White62.7%  Unlock59.4%
 Black  Unlock4.0%12.2%
 Asian9.1%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.4%0.4%
 Two or More Races6.1%  Unlock3.2%
 Hispanic  Unlock17.8%18.4%
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 Marriage & Family
 Santa Monica, CADiamond Bar, CAUnited States
 Married Population40.4%  Unlock49.8%
     Currently Married  Unlock57.2%48.0%
 Married but Separated1.2%  Unlock1.8%
 Single Population  Unlock42.2%50.2%
 Never Married43.0%  Unlock33.8%
 Divorced  Unlock7.6%10.8%
 Widowed4.5%  Unlock5.6%
 space5
 Household Size  Unlock3.102.60
 Households46,664  Unlock124,010,992
 Family Households  Unlock14,44680,755,759
     Married couple, w/children28.1%  Unlock30.5%
     Married couple, no children  Unlock47.1%42.9%
 Non Family Households27,282  Unlock43,255,233
     Single householder, w/children  Unlock8.7%15.8%
     Single householder, no children12.6%  Unlock10.8%
Reviews for Santa Monica    24 Reviews

I moved here to Santa Monica over 10 years ago from Oklahoma City. I was surprised to see that Oklahoma City was ranked higher than Santa Monica on best places. I  More

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I've lived in Santa Monica for over 30 years. It's a Mediterranean climate--sunny and temperate when the rest of the country is under snow! I am walking distance to  More

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I have lived in this city for 4 decades, and it is never been worse than it is now. It is a dangerous disgusting hell hole. Between the crime, the homeless that are not  More

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Reviews for Diamond Bar    3 Reviews

Over 14 years ago

Beautiful city and great place to raise a family. The worst part of Diamond Bar would be some of the best places to live in other cities. Diamond Bar has some of the  More

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Over 14 years ago

The city is centrally located to riverside, San Bernardino, Orange County and Downtown La. It is very scenic with beautiful hills, great schools and within easy reach,  More

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Over 15 years ago

This is a very quiet area about 30 mile east of downtown Los Angeles. I'm a bit concerned about what effect a possible new NFL stadium in the City of Industry CA will  More

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