U.S.-Mexico Border Population
In 2007, there were more than 7.2 million people in the United States living on the U.S.– Mexico border, with females comprising 50.6 percent of that total. Females younger than 35 years of age accounted for 50.9 percent of the female population, while those aged 35–64 years accounted for 35.9 percent, and women aged 65 years and older accounted for 13.3 percent.
The female population living on the U.S.– Mexico border is younger than the overall U.S. population. Nearly 23 percent of females in the U.S. border region were under 15 years of age compared to 19.4 percent of those in the entire United States. Similarly, females aged 45 years and older accounted for 35.8 percent of females in the border region, compared to 40.0 percent of females in the total U.S. population.
The distribution of the population by sex was fairly even across all age groups with the exception of those aged 65 years and older. Within that age group, women accounted for the majority of the population (56.8 percent).