Population Demographics
As of 2025 the population of Los Angeles County Regional Data is 12,893,741. The population is expected to shrink to 12,774,417 by 2030 - a growth rate of -0.19%.
The median age of Los Angeles County Regional Data residents is 39.
The diversity index of Los Angeles County Regional Data is 88.1, meaning that there is a 88% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.