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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Altadena. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Altadena, California is approximatly 42610.
Racial profile for Altadena:
| White : | 20156 |
| Black : | 13388 |
| Native American : | 247 |
| Asian : | 1807 |
| Pacific Islander : | 56 |
| Other : | 4340 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Altadena, California :
| 18 - 19 : | 438 |
| 20 : | 206 |
| 21 : | 176 |
| 22 - 24 : | 553 |
| 25 - 29 : | 1046 |
| 30 - 34 : | 1462 |
| 35 - 39 : | 1778 |
| 40 - 44 : | 1878 |
| 45 - 49 : | 1644 |
| 50 - 54 : | 1461 |
| 55 - 59 : | 1057 |
| 60 - 61 : | 318 |
| 62 - 64 : | 415 |
| 65 - 66 : | 265 |
| 67 - 69 : | 353 |
| 70 - 74 : | 541 |
| 75 - 79 : | 437 |
| 80 - 84 : | 279 |
| 85+ : | 211 |
Population by age for females in Altadena, California :
| 18 - 19 : | 462 |
| 20 : | 161 |
| 21 : | 192 |
| 22 - 24 : | 553 |
| 25 - 29 : | 1204 |
| 30 - 34 : | 1554 |
| 35 - 39 : | 1970 |
| 40 - 44 : | 1929 |
| 45 - 49 : | 1791 |
| 50 - 54 : | 1638 |
| 55 - 59 : | 1242 |
| 60 - 61 : | 384 |
| 62 - 64 : | 528 |
| 65 - 66 : | 324 |
| 67 - 69 : | 464 |
| 70 - 74 : | 745 |
| 75 - 79 : | 634 |
| 80 - 84 : | 468 |
| 85+ : | 528 |
The total amount of households in Altadena, California is 14780. With 41718 people of the population in these households. The average household size is 2.82.
35156 people in Altadena, California are part of a family. The average family size in Altadena is 3.29 people.
There are 6940 married families in Altadena, California.
Number of married families by number of members in the family :
| 0 - 2 : | 1161 | 3 - 4 : | 798 | 5 : | 426 | 6 - 11 : | 2476 | 12 - 17 : | 2079 |