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Population by Sex & Age
Los Angeles County

2019, 2010, 2000 & 1990 Census


Male, Female, Sex, Age Group

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Also see: Age Groups for Cities & Communities in Los Angeles County

2019 Census Estimate*

Percentage is within the population by sex.

Age Group Both Sexes Female Male
Number Percent Number Percent Number Percent
Total Population 10,081,570 100.0% 5,112,188 100.0% 4,969,382 100.0%
Age Under 15 1,835,169 18.2% 895,730 17.5% 939,439 18.9%
Age 15-17 379,591 3.8% 185,868 3.6% 193,723 3.9%
Age 18-24 979,915 9.7% 485,547 9.5% 494,368 9.9%
Age 25-34 1,623,246 16.1% 795,457 15.6% 827,789 16.7%
Age 35-54 2,735,439 27.1% 1,373,649 26.9% 1,361,790 27.4%
Age 55-64 1,192,232 11.8% 618,044 12.1% 574,188 11.6%
Age 65+ 1,335,978 13.3% 757,893 14.8% 578,085 11.6%

* Estimated population calculated over the five-year period of 2014-2019.

2010 Census

Percentage is within the population by sex.

Age Group Both Sexes Female Male
Number Percent Number Percent Number Percent
Total Population 9,818,605 100.0% 4,978,951 100.0% 4,839,654 100.0%
Age Under 15 1,958,328 19.9% 957,285 19.2% 1,001,043 20.7%
Age 15-17 443,880 4.5% 216,775 4.4% 227,105 4.7%
Age 18-24 1,062,538 10.8% 519,238 10.4% 543,300 11.2%
Age 25-34 1,475,731 15.0% 729,075 14.6% 746,656 15.4%
Age 35-54 2,799,273 28.5% 1,412,632 28.4% 1,386,641 28.7%
Age 55-64 1,013,156 10.3% 531,613 10.7% 481,543 9.9%
Age 65+ 1,065,699 10.9% 612,333 12.3% 453,366 9.4%

2000 Census

Percentage is within the population by sex.

Age Group Both Sexes Female Male
Number Percent Number Percent Number Percent
Total Population 9,519,338 100.0% 4,825,408 100.0% 4,693,930 100.0%
Age Under 15 2,266,817 23.8% 1,105,355 22.9% 1,161,462 24.7%
Age 15-17 392,985 4.1% 189,159 3.9% 203,826 4.3%
Age 18-24 976,588 10.3% 478,653 9.9% 497,935 10.6%
Age 25-34 1,562,471 16.4% 770,813 16.0% 791,658 16.9%
Age 35-54 2,708,010 28.4% 1,372,750 28.4% 1,335,260 28.4%
Age 55-64 685,497 363,171 7.5% 322,326 6.9%
Age 65+ 926,970 9.7% 545,507 11.3% 381,463 8.1%

1990 Census

Percentage is within the population by sex.

Age Group Both Sexes Female Male
Number Percent Number Percent Number Percent
Total Population 8,863,164 100.0% 4,441,766 100.0% 4,421,398 100.0%
Age Under 15 1,969,332 22.2% 962,565 21.7% 1,006,767 22.8%
Age 15-17 356,778 4.0% 171,877 3.9% 184,901 4.2%
Age 18-24 1,089,036 12.3% 508,134 11.4% 580,902 13.1%
Age 25-34 1,757,799 19.8% 845,997 19.0% 911,802 20.6%
Age 35-54 2,182,024 24.6% 1,098,654 24.7% 1,083,370 24.5%
Age 55-64 647,608 7.3% 340,107 7.7% 307,501 7.0%
Age 65+ 860,587 9.7% 514,432 11.6% 346,155 7.8%


Source for all tables: U.S. Census Bureau