I found this statement interesting:
People from the South read a bit more than those from other regions, mostly religious books and romance novels. Whites read more than blacks and Hispanics, and those who said they never attend religious services read nearly twice as many as those who attend frequently.
The Bible and religious works were read by two-thirds in the survey, more than all other categories. Popular fiction, histories, biographies and mysteries were all cited by about half, while one in five read romance novels. Every other genre -- including politics, poetry and classical literature -- were named by fewer than five percent of readers.
Where You Fall in Poll of US Reading Habits