In 2003, the U.S. population reached almost 283 million, with females representing 51.1 percent of the population. Females younger than age 35 accounted for 46.9 percent of the female population, those aged 35 to 64 years represented 39.6 percent, and females over age 65 years accounted for 13.5 percent.

The distribution by sex was fairly even across all age groups except among older persons, where women accounted for a greater percentage of the population. Of those aged 65 years and older, 57.6 percent were women.

Graph: US Female Population by Age 2003[d]

Graph: US Population by Age and Sex 2003[d]