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2025 Compare Cities People:
Los Alamitos, CA vs Diamond Bar, CA

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Highlights
- Diamond Bar is 0% more densely populated than Los Alamitos.
- People are 22.3% more likely to be married in Diamond Bar.
- The Median Age is 4.9 years older in Diamond Bar.
 Los Alamitos, CADiamond Bar, CAUnited States
 Population  Unlock55,339329,725,481
 Female Population52.2%  Unlock50.5%
 Male Population47.8%  Unlock49.5%
 Median Age  Unlock43.738.4
 space3
 Population - 201011,357  Unlock309,327,143
 Population - 2000  Unlock56,287285,036,114
 Population - 199011,676  Unlock251,960,433
 Pop. 2000 to Now  Unlock-2.5%15.6%
 Pop. 1990 to Now-2.5%  Unlock30.8%
 space4
 Population Density  Unlock3,721.593.4
 Land Area4.0  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Los Alamitos, CADiamond Bar, CAUnited States
 Age 0 to 44.5%  Unlock5.9%
 Age 5 to 9  Unlock5.4%6.1%
 Age 10 to 147.2%  Unlock6.6%
 Age 15 to 17  Unlock3.4%3.9%
 Age 18 to 202.3%  Unlock4.0%
 Age 21 to 24  Unlock4.1%5.2%
 Age 25 to 3414.3%  Unlock13.8%
 Age 35 to 44  Unlock12.4%12.9%
 Age 45 to 5412.9%  Unlock12.6%
 Age 55 to 59  Unlock8.2%6.7%
 Age 60 to 647.0%  Unlock6.3%
 Age 65 to 74  Unlock12.6%9.6%
 Age 75 to 843.4%  Unlock4.5%
 Age 85 and over  Unlock1.8%1.9%
 space1
 Race
 Los Alamitos, CADiamond Bar, CAUnited States
 White47.9%  Unlock59.4%
 Black  Unlock4.0%12.2%
 Asian12.0%  Unlock5.6%
 Native American  Unlock0.2%0.6%
 Hawaiian, Pacific Islander0.4%  Unlock0.2%
 Other  Unlock0.4%0.4%
 Two or More Races4.7%  Unlock3.2%
 Hispanic  Unlock17.8%18.4%
 space2
 Marriage & Family
 Los Alamitos, CADiamond Bar, CAUnited States
 Married Population47.3%  Unlock49.8%
     Currently Married  Unlock57.2%48.0%
 Married but Separated2.3%  Unlock1.8%
 Single Population  Unlock42.2%50.2%
 Never Married34.7%  Unlock33.8%
 Divorced  Unlock7.6%10.8%
 Widowed6.9%  Unlock5.6%
 space5
 Household Size  Unlock3.102.60
 Households4,165  Unlock124,010,992
 Family Households  Unlock14,44680,755,759
     Married couple, w/children31.0%  Unlock30.5%
     Married couple, no children  Unlock47.1%42.9%
 Non Family Households1,243  Unlock43,255,233
     Single householder, w/children  Unlock8.7%15.8%
     Single householder, no children16.6%  Unlock10.8%
Voting
Reviews for Los Alamitos    2 Reviews
Stacey · Los Alamitos, CA
Los Alamitos Unified School District
Over 12 years ago

Living in this city comes with the best benefit ever - Education. Real quality education. Los Alamitos Unified is the best public school district you can send your  More

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Diana C · Lakewood, CA
Rentals
Over 19 years ago

Would like information on 3 and 4 bedroom homes for  More

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Reviews for Diamond Bar    3 Reviews
EG · Brea, CA
Diamond Bar is beautiful
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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EG · Brea, CA
Diamond Bar is beautiful
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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RICHARD · Walnut, CA
NFL
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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Learn More About Los Alamitos, California
Overview
Cost of Living
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Learn More About Diamond Bar, California
Overview
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