Statistic

From: http://www.cracked.com/photoplasty_1054_20-famous-stereotypes-that-are-statistically-b.s./

In 1970 the census said there were 203,392,031 people in the US.  The 2010 numbers state 308,745,538.

If 1/2 of households had guns in 1970 and 1/3 have them in 2010 that means that the number of gun owners stayed pretty steady at about 100 million households.

I posit that the reason we're seeing this steady state isn't because the percentage is getting smaller, but that gun owners are less likely to admit they own a gun than they used to be.

I certainly would be reluctant to admit it on a survey and I post pictures of my guns to the internet!