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Population by Age in Altadena
*Base on 2010 Data
| Total population | 42,777 | 100.00% |
| Under 5 years | 2,447 | 5.72% |
| 5 to 9 years | 2,496 | 5.83% |
| 10 to 14 years | 2,772 | 6.48% |
| 15 to 19 years | 2,814 | 6.58% |
| 20 to 24 years | 2,264 | 5.29% |
| 25 to 29 years | 2,247 | 5.25% |
| 30 to 34 years | 2,329 | 5.44% |
| 35 to 39 years | 2,763 | 6.46% |
| 40 to 44 years | 3,283 | 7.67% |
| 45 to 49 years | 3,643 | 8.52% |
| 50 to 54 years | 3,611 | 8.44% |
| 55 to 59 years | 3,263 | 7.63% |
| 60 to 64 years | 2,781 | 6.50% |
| 65 to 69 years | 1,974 | 4.61% |
| 70 to 74 years | 1,400 | 3.27% |
| 75 to 79 years | 1,031 | 2.41% |
| 80 to 84 years | 770 | 1.80% |
| 85 years and over | 889 | 2.08% |
Male Population in Altadena
*Base on 2010 Data
| Male population | 20,623 | 48.21% |
| Under 5 years | 1,291 | 3.02% |
| 5 to 9 years | 1,286 | 3.01% |
| 10 to 14 years | 1,427 | 3.34% |
| 15 to 19 years | 1,484 | 3.47% |
| 20 to 24 years | 1,170 | 2.74% |
| 25 to 29 years | 1,120 | 2.62% |
| 30 to 34 years | 1,102 | 2.58% |
| 35 to 39 years | 1,317 | 3.08% |
| 40 to 44 years | 1,614 | 3.77% |
| 45 to 49 years | 1,706 | 3.99% |
| 50 to 54 years | 1,760 | 4.11% |
| 55 to 59 years | 1,544 | 3.61% |
| 60 to 64 years | 1,293 | 3.02% |
| 65 to 69 years | 881 | 2.06% |
| 70 to 74 years | 602 | 1.41% |
| 75 to 79 years | 448 | 1.05% |
| 80 to 84 years | 294 | 0.69% |
| 85 years and over | 284 | 0.66% |
Female Population in Altadena
*Base on 2010 Data
| Female population | 22,154 | 51.79% |
| Under 5 years | 1,156 | 2.70% |
| 5 to 9 years | 1,210 | 2.83% |
| 10 to 14 years | 1,345 | 3.14% |
| 15 to 19 years | 1,330 | 3.11% |
| 20 to 24 years | 1,094 | 2.56% |
| 25 to 29 years | 1,127 | 2.63% |
| 30 to 34 years | 1,227 | 2.87% |
| 35 to 39 years | 1,446 | 3.38% |
| 40 to 44 years | 1,669 | 3.90% |
| 45 to 49 years | 1,937 | 4.53% |
| 50 to 54 years | 1,851 | 4.33% |
| 55 to 59 years | 1,719 | 4.02% |
| 60 to 64 years | 1,488 | 3.48% |
| 65 to 69 years | 1,093 | 2.56% |
| 70 to 74 years | 798 | 1.87% |
| 75 to 79 years | 583 | 1.36% |
| 80 to 84 years | 476 | 1.11% |
| 85 years and over | 605 | 1.41% |
Median Age in Altadena
*Base on 2010 Data
| Both | 41.80% | |
| Male | 40.30% | |
| Female | 43.40% |
Race in Altadena
*Base on 2010 Data
| Total | 42,777 | 100.00% |
| Population of one race | 40,235 | 94.06% |
| White | 22,569 | 52.76% |
| Black or African American | 10,136 | 23.69% |
| American Indian and Alaska Native | 300 | 0.70% |
| Asian | 2,307 | 5.39% |
| Asian Indian | 163 | 0.38% |
| Chinese | 475 | 1.11% |
| Filipino | 606 | 1.42% |
| Japanese | 478 | 1.12% |
| Korean | 213 | 0.50% |
| Vietnamese | 105 | 0.25% |
| Other Asian | 267 | 0.62% |
| Native Hawaiian and Other Pacific Islander | 71 | 0.17% |
| Native Hawaiian | 11 | 0.03% |
| Guamanian or Chamorro | 8 | 0.02% |
| Samoan | 7 | 0.02% |
| Other Pacific Islander | 45 | 0.11% |
| Some Other Race | 4,852 | 11.34% |
| Population of Two or More Races | 2,542 | 5.94% |
| White; American Indian and Alaska Native | 189 | 0.44% |
| White; Asian | 524 | 1.22% |
| White; Black or African American | 493 | 1.15% |
| White; Some Other Race | 392 | 0.92% |
The Population 16 Years in Altadena
*Base on 2010 Data
| Total | 34,453 | 100.00% |
| Male | 16,324 | 47.38% |
| Female | 18,129 | 52.62% |
The Population 18 Years in Altadena
*Base on 2010 Data
| Total | 33,270 | 100.00% |
| Male | 15,683 | 47.14% |
| Female | 17,587 | 52.86% |
The Population 21 Years in Altadena
*Base on 2010 Data
| Total | 31,793 | 100.00% |
| Male | 14,897 | 46.86% |
| Female | 16,896 | 53.14% |
The Population 62 Years in Altadena
*Base on 2010 Data
| Total | 7,615 | 100.00% |
| Male | 3,257 | 42.77% |
| Female | 4,358 | 57.23% |
The Population 65 Years in Altadena
*Base on 2010 Data
| Total | 6,064 | 100.00% |
| Male | 2,509 | 41.38% |
| Female | 3,555 | 58.62% |
Race (total races tallied) in Altadena
*Base on 2010 Data
| White alone or in combination with one or more other races | 24,517 | 53.63% |
| Black or African American alone or in combination with one or more other races | 11,328 | 24.78% |
| American Indian and Alaska Native alone or in combination with one or more other races | 986 | 2.16% |
| Asian alone or in combination with one or more other races | 3,154 | 6.90% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 214 | 0.47% |
| Some Other Race alone or in combination with one or more other races | 5,513 | 12.06% |
Hispanic or Latino by Specific Origin in Altadena
*Base on 2010 Data
| Total | 42,777 | 100.00% |
| Hispanic or Latino (of any race) | 11,502 | 26.89% |
| Mexican | 8,477 | 19.82% |
| Puerto Rican | 196 | 0.46% |
| Cuban | 170 | 0.40% |
| Other Hispanic or Latino | 2,659 | 6.22% |
| Not Hispanic or Latino | 31,275 | 73.11% |
Hispanic or Latino and Race in Altadena
*Base on 2010 Data
| Total | 42,777 | 100.00% |
| Hispanic or Latino | 11,502 | 26.89% |
| White alone | 5,338 | 12.48% |
| Black or African American alone | 320 | 0.75% |
| American Indian and Alaska Native alone | 215 | 0.50% |
| Asian alone | 76 | 0.18% |
| Native Hawaiian and Other Pacific Islander alone | 6 | 0.01% |
| Some Other Race alone | 4,665 | 10.91% |
| Two or More Races | 882 | 2.06% |
| Not Hispanic or Latino | 31,275 | 73.11% |
| White alone | 17,231 | 40.28% |
| Black or African American alone | 9,816 | 22.95% |
| American Indian and Alaska Native alone | 85 | 0.20% |
| Asian alone | 2,231 | 5.22% |
| Native Hawaiian and Other Pacific Islander alone | 65 | 0.15% |
| Some Other Race alone | 187 | 0.44% |
| Two or More Races | 1,660 | 3.88% |
Relationship in Altadena
*Base on 2010 Data
| Total | 42,777 | 100.00% |
| In households | 42,276 | 98.83% |
| Householder | 15,212 | 35.56% |
| Spouse | 7,684 | 17.96% |
| Child | 12,237 | 28.61% |
| Own child under 18 years | 7,669 | 17.93% |
| Other relatives | 4,307 | 10.07% |
| Under 18 years | 1,468 | 3.43% |
| 65 years and over | 703 | 1.64% |
| Nonrelatives | 2,836 | 6.63% |
| Under 18 years | 225 | 0.53% |
| 65 years and over | 179 | 0.42% |
| Unmarried partner | 932 | 2.18% |
| In group quarters | 501 | 1.17% |
| Institutionalized population | 267 | 0.62% |
| Male | 173 | 0.40% |
| Female | 94 | 0.22% |
| Noninstitutionalized population | 234 | 0.55% |
| Male | 148 | 0.35% |
| Female | 86 | 0.20% |
Households by Type in Altadena
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 15,212 | 100.00% |
| Family households (families) | 10,708 | 70.39% |
| With own children under 18 years | 4,383 | 28.81% |
| Husband-wife family | 7,684 | 50.51% |
| With own children under 18 years | 3,255 | 21.40% |
| Male householder, no wife present | 814 | 5.35% |
| With own children under 18 years | 301 | 1.98% |
| Female householder, no husband present | 2,210 | 14.53% |
| With own children under 18 years | 827 | 5.44% |
| Nonfamily households | 4,504 | 29.61% |
| Householder living alone | 3,489 | 22.94% |
| Male | 1,338 | 8.80% |
| 65 years and over | 360 | 2.37% |
| Female | 2,151 | 14.14% |
| 65 years and over | 958 | 6.30% |
Households with individuals under 18 years in Altadena
*Base on 2010 Data
| Total | 5,170 | 33.99% |
Households with individuals under 65 years in Altadena
*Base on 2010 Data
| Total | 4,507 | 29.63% |
Average Household Size in Altadena
*Base on 2010 Data
| Average household size | 3 | % |
Average Family Size in Altadena
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in Altadena
*Base on 2010 Data
| Total | 15,947 | 100.00% |
| Occupied housing units | 15,212 | 95.39% |
| Vacant housing units | 735 | 4.61% |
| For rent | 224 | 1.40% |
| Rented, not occupied | 14 | 0.09% |
| For sale only | 99 | 0.62% |
| Sold, not occupied | 36 | 0.23% |
| For seasonal, recreational, or occasional use | 97 | 0.61% |
| All other vacants | 265 | 1.66% |
Homeowner Vacancy Rate in Altadena
*Base on 2010 Data
| Homeowner vacancy rate (percent) | .90% |
Rental Vacancy Rate in Altadena
*Base on 2010 Data
| Rental vacancy rate (percent) | 4.90% |
Housing Tenure(Occupied housing units) in Altadena
*Base on 2010 Data
| Total | 15,212 | 100.00% |
| Owner-occupied housing units | 10,889 | 71.58% |
| Renter-occupied housing units | 4,323 | 28.42% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Altadena
*Base on 2010 Data
| Owner-occupied housing units | 30,319 | 71.72% |
| Renter-occupied housing units | 11,957 | 28.28% |
Average Household Size of Occupied Housing Units by Tenure in Altadena
*Base on 2010 Data
| Owner occupied | 3 | % |
| Renter occupied | 3 | % |