The U.S. government "Bureau of Labor Statistics" which I have used in other posts, provides data on how Americans live. But it is sometimes difficult to extract the information. In an a nation consumed with the "10 second" sound bite, some information simply cannot be disseminated in that time period. Of course, we all have 10 minutes for Tom Skilling's analysis of the weather - go figure!
Here is a site which provides a useful calculator. It provide you with the means to compare your spending with that of your peers, based upon your age. Have fun! BLS - Age and Income Driven Spending