Hi TC, I believe the two categories were to help the Government survey the number of men available for military service. Rebecca >Subject: Re: [PA] census question >To: [email protected] I see it says that the 16 to 18's are repeated in the 16 to 25 >category. That helps me to count up my families, but it doesn't explain why they did it that way. I'm still curious about that. > >TC >