John Lott posted that there were 461,724 concealed handgun licensees in Texas in 2010.
Over here, I found out that the population of Texas was 25,145,561 in 2010. From the same site I see that 27.3% of them are under 18.
Lets see here: (25,145,561 * (1 – .273)) / 461724 = 39.59.
Cool! About one in every 40 legal adults in Texas has a concealed handgun permit.
This makes me happy.