For the United States, see U.S. 1st Armored Division. For Great Britain, see U.K. 1st Armoured Division[?].
... 45 to 64, and 7.0% who are 65 years of age or older. The median age is 36 years. For every 100 females there are 92.3 males. For every 100 females age 18 and over, ...