Lets see what Reno, Nevada and Sparks, Nevada have(they're so close together they're basically one city, literally it's impossible to tell where one starts and the other ends.):
Curtis Hanson(film director, producer, and screenwriter)
Jennifer Harman(Professional Poker player)
Jim Gibbons(Former Governor, Current House Rep)
Chris Carr (NFL Player, currently for the New Orleans Saints)
Shannon Bahrke (Winter Games Olympic Athlete)
Mädchen E. Amick (Actress)
Paul Laxalt (Former Governor, Senator, and RNC Chair.)
Julia Mancuso (Winter Games Olympic Gold Medallist)
Anne Henrietta Martin(First Woman to run for the US Senate)
Kevin Stadler (Professional Golfer)
Willy Vlautin (Author, Songwriter for Richmond Fontaine)
Dr. J. Buzz Von Ornsteiner (Famous forensic psychologist among other things)
Dawn Wells (Miss Nevada 1959, Actress, most notable for her role as Mary Ann on Gilligan's Island)
Joel Wieland (MLB Pitcher for the Los Angeles Dodgers)
That's not nearly all of them as I recall but all I could find.