Step 1 : Introduction to the question "How many castaways were there on the sitcom Gilligan’s Island?"
...What island was used for Gilligan's Island? It is located in Oahu's Kaneohe Bay and is the home of the Institute of Marine Biology. The 1st season island seen in the distance is not known. If you know, please educate us. The best way to see the site where Gilligan's Island was filmed in Kauai is to take a tour.
What were the names of the castaways on Gilligan Island? The characters full names were Skipper Jonas Grumby, Ginger Grant, Thurston Howell III, Lovey Wentworth Howell, Professor Roy Hinkley and Mary Ann Summers. Gilligan's name is less certain. 4.