How many planets have been discovered so far?

Question: How many planets have been discovered so far?
- Keywords:
  planet
Asked by hazel17 to Dominic, James, Jenny, Kevin, Norah on 13 Mar 2017.
- Dominic Doyle answered on 13 Mar 2017:
  
  Outside the 8 (or 9) planets in our solar system, we now know of at least 3457 “exo-planets” These are planets orbiting other stars in our Galaxy (the Milky way), Check out this web site for a real-time counter!
  http://www.openexoplanetcatalogue.com/

Question: How many planets have been discovered so far?