I have often heard and cited statistics about how many Americans actually have passports.

I wont bother to throw in my two cents on whether they need it or not what with the vastness of the United States and all, but NY Times now published some statistics that are up to date so I thought I would share it

73% of Americans DO NOT have passports
Doesnt say if the remaining 27% who do have it actually us them to travel, but I would think so.
The article ran January this year (2007) so I gather the stats are up to date.

Link to Article