The force most definitely is included. In the very first movie it is stated to surround all things and bind them together which is part of their fiction not location. As far as numbers go, the Star Wars universe has over a hundred billion "star systems" most of which include planets that are quite advanced and capable of space flight. If you include the fact that a Sith is capable of popping a star's cherry with a concentrated wink, and mandolorians had armor that was impervious to lightsabers (so everything in halo) I think Star Wars has more than a fighting chance