Los Angeles County Historical Age Data
ACS 2010-2014 data
Total population: 9,974,203
Median Age (
see rank)
| Los Angeles County | 35.30 years old |
| California | 35.60 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Los Angeles County | 34.10 years old |
| California | 34.50 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Los Angeles County | 36.50 years old |
| California | 36.80 years old |
| U.S. | 38.80 years old |
| | Los Angeles County | % of the Total Population | California | U.S. |
| Under 5 years | 644,638 | 6.46%, see rank | 6.62% | 6.36% |
| 5 to 9 years | 629,141 | 6.31%, see rank | 6.65% | 6.51% |
| 10 to 14 years | 651,107 | 6.53%, see rank | 6.70% | 6.59% |
| 15 to 19 years | 714,751 | 7.17%, see rank | 7.12% | 6.85% |
| 20 to 24 years | 776,820 | 7.79%, see rank | 7.58% | 7.13% |
| 25 to 34 years | 1,522,133 | 15.26%, see rank | 14.48% | 13.47% |
| 35 to 44 years | 1,419,395 | 14.23%, see rank | 13.60% | 12.96% |
| 45 to 54 years | 1,379,750 | 13.83%, see rank | 13.79% | 14.09% |
| 55 to 64 years | 1,086,575 | 10.89%, see rank | 11.32% | 12.29% |
| 65 to 74 years | 628,108 | 6.30%, see rank | 6.71% | 7.64% |
| 75 to 84 | 356,889 | 3.58%, see rank | 3.72% | 4.25% |
| 85 years and over | 164,896 | 1.65%, see rank | 1.70% | 1.85% |
US Census 2010 data
Total population: 9,818,605
Median Age (
see rank)
| Los Angeles County | 34.80 years old |
| California | 35.20 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Los Angeles County | 33.60 years old |
| California | 34.00 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Los Angeles County | 35.90 years old |
| California | 36.30 years old |
| U.S. | 38.50 years old |
| | Los Angeles County | % of the Total Population | California | U.S. |
| Under 5 years | 645,793 | 6.58%, see rank | 6.79% | 6.54% |
| 5 to 9 years | 633,690 | 6.45%, see rank | 6.73% | 6.59% |
| 10 to 14 years | 678,845 | 6.91%, see rank | 6.95% | 6.70% |
| 15 to 19 years | 753,630 | 7.68%, see rank | 7.58% | 7.14% |
| 20 to 24 years | 752,788 | 7.67%, see rank | 7.42% | 6.99% |
| 25 to 34 years | 1,475,731 | 15.03%, see rank | 14.27% | 13.30% |
| 35 to 44 years | 1,430,326 | 14.57%, see rank | 13.91% | 13.30% |
| 45 to 54 years | 1,368,947 | 13.94%, see rank | 14.10% | 14.58% |
| 55 to 64 years | 1,013,156 | 10.32%, see rank | 10.84% | 11.82% |
| 65 to 74 years | 568,470 | 5.79%, see rank | 6.11% | 7.03% |
| 75 to 84 | 345,603 | 3.52%, see rank | 3.68% | 4.23% |
| 85 years and over | 151,626 | 1.54%, see rank | 1.61% | 1.78% |
ACS 2008-2012 data
Total population: 9,840,024
Median Age (
see rank)
| Los Angeles County | 34.80 years old |
| California | 35.20 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Los Angeles County | 33.60 years old |
| California | 34.10 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Los Angeles County | 36.00 years old |
| California | 36.40 years old |
| U.S. | 38.50 years old |
| | Los Angeles County | % of the Total Population | California | U.S. |
| Under 5 years | 651,662 | 6.62%, see rank | 6.82% | 6.51% |
| 5 to 9 years | 632,456 | 6.43%, see rank | 6.71% | 6.57% |
| 10 to 14 years | 676,243 | 6.87%, see rank | 6.91% | 6.68% |
| 15 to 19 years | 743,187 | 7.55%, see rank | 7.47% | 7.09% |
| 20 to 24 years | 756,110 | 7.68%, see rank | 7.49% | 7.04% |
| 25 to 34 years | 1,487,070 | 15.11%, see rank | 14.32% | 13.32% |
| 35 to 44 years | 1,433,644 | 14.57%, see rank | 13.93% | 13.34% |
| 45 to 54 years | 1,363,713 | 13.86%, see rank | 14.00% | 14.44% |
| 55 to 64 years | 1,017,384 | 10.34%, see rank | 10.85% | 11.84% |
| 65 to 74 years | 576,609 | 5.86%, see rank | 6.20% | 7.12% |
| 75 to 84 | 348,727 | 3.54%, see rank | 3.70% | 4.25% |
| 85 years and over | 153,219 | 1.56%, see rank | 1.62% | 1.78% |
ACS 2006-2010 data
Total population: 9,758,256
Median Age (
see rank)
| Los Angeles County | 34.30 years old |
| California | 34.90 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Los Angeles County | 33.10 years old |
| California | 33.70 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Los Angeles County | 35.50 years old |
| California | 36.00 years old |
| U.S. | 38.10 years old |
| | Los Angeles County | % of the Total Population | California | U.S. |
| Under 5 years | 659,802 | 6.76%, see rank | 6.95% | 6.62% |
| 5 to 9 years | 648,140 | 6.64%, see rank | 6.78% | 6.62% |
| 10 to 14 years | 698,366 | 7.16%, see rank | 7.12% | 6.79% |
| 15 to 19 years | 752,353 | 7.71%, see rank | 7.65% | 7.28% |
| 20 to 24 years | 731,474 | 7.50%, see rank | 7.37% | 6.98% |
| 25 to 34 years | 1,484,342 | 15.21%, see rank | 14.29% | 13.22% |
| 35 to 44 years | 1,463,499 | 15.00%, see rank | 14.43% | 13.89% |
| 45 to 54 years | 1,344,764 | 13.78%, see rank | 14.05% | 14.57% |
| 55 to 64 years | 949,475 | 9.73%, see rank | 10.28% | 11.28% |
| 65 to 74 years | 539,066 | 5.52%, see rank | 5.83% | 6.74% |
| 75 to 84 | 345,000 | 3.54%, see rank | 3.73% | 4.30% |
| 85 years and over | 141,975 | 1.45%, see rank | 1.52% | 1.70% |
ACS 2005-2009 data
Total population: 9,785,295
Median Age (
see rank)
| Los Angeles County | 33.80 years old |
| California | 34.60 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Los Angeles County | 32.70 years old |
| California | 33.40 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Los Angeles County | 34.90 years old |
| California | 35.70 years old |
| U.S. | 37.90 years old |
| | Los Angeles County | % of the Total Population | California | U.S. |
| Under 5 years | 729,141 | 7.45%, see rank | 7.44% | 6.92% |
| 5 to 9 years | 660,893 | 6.75%, see rank | 6.82% | 6.59% |
| 10 to 14 years | 721,004 | 7.37%, see rank | 7.26% | 6.83% |
| 15 to 19 years | 715,594 | 7.31%, see rank | 7.34% | 7.15% |
| 20 to 24 years | 691,675 | 7.07%, see rank | 7.20% | 7.02% |
| 25 to 34 years | 1,554,695 | 15.89%, see rank | 14.55% | 13.42% |
| 35 to 44 years | 1,483,575 | 15.16%, see rank | 14.71% | 14.18% |
| 45 to 54 years | 1,321,237 | 13.50%, see rank | 13.94% | 14.48% |
| 55 to 64 years | 899,648 | 9.19%, see rank | 9.81% | 10.81% |
| 65 to 74 years | 519,562 | 5.31%, see rank | 5.65% | 6.50% |
| 75 to 84 | 349,586 | 3.57%, see rank | 3.79% | 4.40% |
| 85 years and over | 138,685 | 1.42%, see rank | 1.50% | 1.71% |
US Census 2000 data
Total population: 9,519,338
Median Age (
see rank)
| Los Angeles County | 32.00 years old |
| California | 33.30 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Los Angeles County | 31.00 years old |
| California | 32.20 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Los Angeles County | 33.00 years old |
| California | 34.40 years old |
| U.S. | 36.50 years old |
| | Los Angeles County | % of the Total Population | California | U.S. |
| Under 5 years | 737,631 | 7.75%, see rank | 7.34% | 6.81% |
| 5 to 9 years | 802,047 | 8.43%, see rank | 8.05% | 7.30% |
| 10 to 14 years | 723,652 | 7.60%, see rank | 7.59% | 7.29% |
| 15 to 19 years | 683,466 | 7.18%, see rank | 7.24% | 7.18% |
| 20 to 24 years | 701,837 | 7.37%, see rank | 7.03% | 6.74% |
| 25 to 34 years | 1,581,722 | 16.62%, see rank | 15.44% | 14.18% |
| 35 to 44 years | 1,517,478 | 15.94%, see rank | 16.19% | 16.04% |
| 45 to 54 years | 1,148,612 | 12.07%, see rank | 12.79% | 13.39% |
| 55 to 64 years | 696,220 | 7.31%, see rank | 7.72% | 8.63% |
| 65 to 74 years | 492,833 | 5.18%, see rank | 5.57% | 6.54% |
| 75 to 84 | 324,693 | 3.41%, see rank | 3.79% | 4.39% |
| 85 years and over | 109,147 | 1.15%, see rank | 1.26% | 1.51% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
