- 948 confirmed planets around 697 Stars
- 141 Systems with Multiple Planets
- 3,588 Kepler Candidates and Confirmed Planets
Extrapolating from the above, there are something like a hundred billion planets in our galaxy alone; which is one of untold billions of galaxies.
For the breakdowns, see this NASA page, plus this update, and this article: http://news.nationalgeographic.com/news/billions-of-earthlike-planets-found-in-milky-way/