Labor force participation rate is a measure of the active workforce. It is the total number of those employed or actively seeking employment divided by the all working age population, however, from the U.S. Census Bureau’s American Community Survey (ACS), the universe for the working age population considered varies. For participation rates by sex, the population used is 20 to 64 years old. For race and ethnic groupings, the age range is 16 and older. As a result of the narrower age range the rates by sex are higher than those by race.