Pearson and his wife Helen married in 1953. A 2011 "Orange County Register" article reported that they had five daughters, 17 grandchildren, and 16 great-grandchildren. Pearson also plays golf; he participated in a 1962 golf tournament with several other major leaguers, including Hall of Famers Bob Lemon and Ralph Kiner. While he was with the Angels, his roommates at various times included Bo Belinsky and Don Lee. Pearson was also an actor and singer. He was offered a part in "The Petticoat Pirates", a movie, but he turned it down because the proposed scene involved him drinking. However, he did appear in "Day in Court", a TV show, and he would have appeared in an episode of "The Roaring 20's", only his scene was cut before the episode was released. In 1961, he made two records for Capitol (only one of which was released), and he sang "Because" when his bride-to-be came down the aisle at his wedding. In the 1961–62 offseason, he served as a disc jockey on KPRO in Riverside County, California. During his career, he owned 27.5% of the stock in the Mighty Mite Corporation, which made adhesive grips for sporting equipment.