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

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Highlights
- Los Alamitos is 0% more densely populated than Diamond Bar.
- People are 18.2% less likely to be married in Los Alamitos.
- The Median Age is 4.9 years younger in Los Alamitos.
 Diamond Bar, CALos Alamitos, CAUnited States
 Population  Unlock11,780329,725,481
 Female Population51.7%  Unlock50.5%
 Male Population48.3%  Unlock49.5%
 Median Age  Unlock38.838.4
 space3
 Population - 201055,559  Unlock309,327,143
 Population - 2000  Unlock11,536285,036,114
 Population - 199053,672  Unlock251,960,433
 Pop. 2000 to Now  Unlock-1.3%15.6%
 Pop. 1990 to Now2.3%  Unlock30.8%
 space4
 Population Density  Unlock2,928.293.4
 Land Area14.9  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Diamond Bar, CALos Alamitos, CAUnited States
 Age 0 to 45.3%  Unlock5.9%
 Age 5 to 9  Unlock8.3%6.1%
 Age 10 to 146.2%  Unlock6.6%
 Age 15 to 17  Unlock3.9%3.9%
 Age 18 to 202.8%  Unlock4.0%
 Age 21 to 24  Unlock4.8%5.2%
 Age 25 to 3412.1%  Unlock13.8%
 Age 35 to 44  Unlock13.5%12.9%
 Age 45 to 5414.6%  Unlock12.6%
 Age 55 to 59  Unlock7.3%6.7%
 Age 60 to 647.2%  Unlock6.3%
 Age 65 to 74  Unlock7.6%9.6%
 Age 75 to 844.0%  Unlock4.5%
 Age 85 and over  Unlock3.2%1.9%
 space1
 Race
 Diamond Bar, CALos Alamitos, CAUnited States
 White14.1%  Unlock59.4%
 Black  Unlock3.8%12.2%
 Asian60.7%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.2%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races2.7%  Unlock3.2%
 Hispanic  Unlock31.0%18.4%
 space2
 Marriage & Family
 Diamond Bar, CALos Alamitos, CAUnited States
 Married Population57.8%  Unlock49.8%
     Currently Married  Unlock45.0%48.0%
 Married but Separated0.7%  Unlock1.8%
 Single Population  Unlock52.7%50.2%
 Never Married29.5%  Unlock33.8%
 Divorced  Unlock11.1%10.8%
 Widowed5.1%  Unlock5.6%
 space5
 Household Size  Unlock2.792.60
 Households17,788  Unlock124,010,992
 Family Households  Unlock2,92280,755,759
     Married couple, w/children32.0%  Unlock30.5%
     Married couple, no children  Unlock32.0%42.9%
 Non Family Households3,342  Unlock43,255,233
     Single householder, w/children  Unlock20.3%15.8%
     Single householder, no children12.2%  Unlock10.8%
Voting
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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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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Learn More About Diamond Bar, California
Overview
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Learn More About Los Alamitos, California
Overview
Cost of Living
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