In 1980, the median age for the U.S population (both men and women) was 30; in 2003, it was 35.9.

In 1980, the median age for men was 28.8; in 2003, it was 34.5.

In 1980, the median age for women was 31.3; in 2003, it was 37.1.

*The median age is the age at which half of the population is "younger" and the other half is "older." (U.S. Census Bureau, 2005:12).

U.S. Census Bureau. (2005). U.S. Census Bureau, statistical abstract of the United States: 2004-2005. Population. (Section 1, Tables 11-16, p. 12-19). Washington, DC: U.S. Census Bureau. Retrieved July 15, 2005, from http://www.census.gov/prod/www/statistical-abstract-2001_2005.html

"This section presents statistics on the growth, distribution, and characteristics of the U.S. population. The principal source of these data is the U.S. Census Bureau, which conducts a decennial census of population, a monthly population survey, a program of population estimates and projections, and a number of other periodic surveys relating to population characteristics."