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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Diamond Bar. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Diamond Bar, California is approximatly 56287.
Racial profile for Diamond Bar:
| White : | 23103 |
| Black : | 2680 |
| Native American : | 185 |
| Asian : | 24066 |
| Pacific Islander : | 67 |
| Other : | 3818 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Diamond Bar, California :
| 18 - 19 : | 883 |
| 20 : | 392 |
| 21 : | 344 |
| 22 - 24 : | 1010 |
| 25 - 29 : | 1486 |
| 30 - 34 : | 1668 |
| 35 - 39 : | 2123 |
| 40 - 44 : | 2489 |
| 45 - 49 : | 2466 |
| 50 - 54 : | 2276 |
| 55 - 59 : | 1657 |
| 60 - 61 : | 502 |
| 62 - 64 : | 561 |
| 65 - 66 : | 298 |
| 67 - 69 : | 440 |
| 70 - 74 : | 489 |
| 75 - 79 : | 330 |
| 80 - 84 : | 185 |
| 85+ : | 101 |
Population by age for females in Diamond Bar, California :
| 18 - 19 : | 734 |
| 20 : | 354 |
| 21 : | 317 |
| 22 - 24 : | 922 |
| 25 - 29 : | 1614 |
| 30 - 34 : | 1925 |
| 35 - 39 : | 2457 |
| 40 - 44 : | 2879 |
| 45 - 49 : | 2849 |
| 50 - 54 : | 2330 |
| 55 - 59 : | 1609 |
| 60 - 61 : | 457 |
| 62 - 64 : | 587 |
| 65 - 66 : | 348 |
| 67 - 69 : | 434 |
| 70 - 74 : | 627 |
| 75 - 79 : | 504 |
| 80 - 84 : | 267 |
| 85+ : | 190 |
The total amount of households in Diamond Bar, California is 17651. With 56169 people of the population in these households. The average household size is 3.18.
51353 people in Diamond Bar, California are part of a family. The average family size in Diamond Bar is 3.47 people.
There are 11914 married families in Diamond Bar, California.
Number of married families by number of members in the family :
| 0 - 2 : | 1423 | 3 - 4 : | 1120 | 5 : | 586 | 6 - 11 : | 4258 | 12 - 17 : | 4527 |