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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Black Diamond. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Black Diamond, Washington is approximatly 3970.
Racial profile for Black Diamond:
| White : | 3709 |
| Black : | 3 |
| Native American : | 62 |
| Asian : | 40 |
| Pacific Islander : | 2 |
| Other : | 35 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Black Diamond, Washington :
| 18 - 19 : | 49 |
| 20 : | 16 |
| 21 : | 18 |
| 22 - 24 : | 48 |
| 25 - 29 : | 107 |
| 30 - 34 : | 149 |
| 35 - 39 : | 217 |
| 40 - 44 : | 198 |
| 45 - 49 : | 166 |
| 50 - 54 : | 132 |
| 55 - 59 : | 107 |
| 60 - 61 : | 33 |
| 62 - 64 : | 39 |
| 65 - 66 : | 16 |
| 67 - 69 : | 29 |
| 70 - 74 : | 43 |
| 75 - 79 : | 36 |
| 80 - 84 : | 18 |
| 85+ : | 10 |
Population by age for females in Black Diamond, Washington :
| 18 - 19 : | 50 |
| 20 : | 14 |
| 21 : | 9 |
| 22 - 24 : | 44 |
| 25 - 29 : | 110 |
| 30 - 34 : | 192 |
| 35 - 39 : | 206 |
| 40 - 44 : | 174 |
| 45 - 49 : | 144 |
| 50 - 54 : | 132 |
| 55 - 59 : | 97 |
| 60 - 61 : | 27 |
| 62 - 64 : | 33 |
| 65 - 66 : | 20 |
| 67 - 69 : | 39 |
| 70 - 74 : | 39 |
| 75 - 79 : | 35 |
| 80 - 84 : | 26 |
| 85+ : | 18 |
The total amount of households in Black Diamond, Washington is 1456. With 3970 people of the population in these households. The average household size is 2.73.
3484 people in Black Diamond, Washington are part of a family. The average family size in Black Diamond is 3.08 people.
There are 892 married families in Black Diamond, Washington.
Number of married families by number of members in the family :
| 0 - 2 : | 159 | 3 - 4 : | 114 | 5 : | 46 | 6 - 11 : | 298 | 12 - 17 : | 275 |