Background
Amy Sherman-Palladino, who came from a background of writing for half-hour sitcoms, had Gilmore Girls approved by The WB after several of her previous pitches were turned down. On a whim, she suggested a show about a mother and daughter but had put little thought into the idea. Having to create a pilot, she drew inspiration for the show's setting of "Stars Hollow, Connecticut" after making a trip to Washington Depot, Connecticut, where she stayed at the Mayflower Inn. She explained: "If I can make people feel this much of what I felt walking around this fairy town, I thought that would be wonderful ... At the time I was there, it was beautiful, it was magical, and it was a feeling of warmth and small-town camaraderie ... There was a longing for that in my own life, and I thought—that's something that I would really love to put out there." Stars Hollow was inspired by and is loosely based on the actual villages of Washington Depot, Connecticut, West Hartford, Connecticut, and the town of New Milford.
Casting
Alexis Bledel was cast in the key role of Rory despite having no previous acting experience. Sherman-Palladino was drawn to her shyness and innocence, which she said was essential for the character, and felt she photographed well.[17] Lauren Graham was pursued by the casting directors from the start of the process, but she was committed to another show on NBC. A week before the shooting, they had still failed to cast Lorelai, so they asked Graham to audition anyway. Sherman-Palladino cast her that day, on the hope that Graham's other show (M.Y.O.B., which was burned off as a summer replacement series several months before the premiere of Gilmore Girls) would be canceled, which it soon was.[18][19] She later explained how Graham met all the criteria she had been looking for: "Lorelai's a hard fucking part. You've got to be funny, you've got to talk really fucking fast, you've got to be able to act, you've got to be sexy, but not scary sexy. You've got to be strong, but not like 'I hate men'".[20] Graham and Bledel only met the night before they started filming the pilot.
Writing
Headed by Amy Sherman-Palladino and Daniel Palladino from seasons 1 to 6, Gilmore Girls had a small writing staff that changed regularly throughout the series. The Palladinos wrote a high percentage of episodes and would review and rework the dialogue in episodes allocated to others. As such, the show is considered to have a distinctive "voice". Sherman-Palladino said "every draft either I write, or it passes through my hands ... so that there is a consistency of tone. It's very important that it feels like the same show every week because it is so verbal."[22] The main job of the writers' room was to help develop storylines and create detailed episode outlines.[22][23] Notable writers who worked on the show at some point include Jenji Kohan, Bill Prady, Jane Espenson, Rebecca Rand Kirshner, and Janet Leahy.
Filming
The pilot episode was shot in the Toronto suburb of Unionville. The rest of the series was filmed at the Warner Bros. lot in Burbank, California. Exterior scenes of Stars Hollow, along with those at Luke's Diner and Miss Patty's dance studio, were all filmed on the backlot – with dozens of background actors utilized to make it look like a functioning town. Production designers regularly had to decorate the town square with fake leaves or fake snow to make it look like a New England fall or winter. Interiors of Lorelai's house and inn, and all scenes at Yale and the Gilmore mansion, were filmed on a sound stage.[35] Very occasionally, the show was filmed on location. The exterior shots of Rory's preparatory school, Chilton, were filmed at Greystone Mansion in Beverly Hills, California.[36] Rory's visit to Harvard was filmed at UCLA, the first visit to Yale was filmed at Pomona College, and subsequent Yale shots were filmed at sound stages in Burbank, California, and USC.
Music
Gilmore Girls' non-diegetic score was composed by singer-songwriter Sam Phillips throughout its entire run. Sherman-Palladino, who served as the music supervisor of the series, was a big fan of the musician and secured her involvement.[49] For the score's instrumental arrangement, Phillips primarily used her voice and an acoustic guitar, and on occasion included piano, violin, and drums. Many of the musical cues are accompanied by melodic "la-la"s and "ahh"s, which developed because Sherman-Palladino wanted the score to sound connected to the girls themselves, almost like "an extension of their thoughts ... if they had music going in their head during a certain emotional thing in their life." Sherman-Palladino felt that the score elevated the series "because it wasn't a wasted element in the show. Everything was trying to say a little something, add a little something to it."[50] Several of Phillips' album tracks are also played in the show, and she made an appearance in the season six finale, performing part of "Taking Pictures".