I'm lifting these from the data collected by RWA and posted here. and the RWA data about who reads and buys romances.

You should really go look at all the data, especially regarding romance readers, because these are mere highlights.

  • Romance novel share of the U.S. fiction market: 34% (source: Nielsen BookScan/PubTrack Digital 2015)
  • Women make up 84 percent of romance book buyers, and men make up 16 percent. (Update: According to Nielsen, as of Q4 2014, women make up 82% of romance book buyers.)
  • The U.S. romance book buyer is most likely to be aged between 30 and 54 years.
  • Romance book buyers are highly represented in the South.
  • Romance book buyers have an average income of $55,000.