Fancy Nancy is the first Disney Junior series where episode titles don't show in text, and are only spoken.
Valentine's Day is the only holiday to have an episode in more than one season.
Season 3 is the shortest season, having only 13 episodes instead of 25. It's also the only season to not have a holiday episode.
Nancy has over 236 sections of animated hair on her head, which can be arranged in a multitude of styles.
On June 7, 2018, the show was slated to premiere on July 13, 2018, Christine Baranski was reported to voice Mrs. Devine, Mia Sinclair Jenness was reported to voice Nancy, Rob Riggle and Alyson Hannigan were reported to voice Nancy's parents, and it was reported that the series has a variety of music styles ranging from pop to big band to classical.