A total of 138 episodes of 30 Rock were produced. The NBC sitcom ran for seven seasons, beginning in October 2006 and ending in January 2013.
The series was created by Tina Fey and followed Liz Lemon, the head writer of a fictional live sketch-comedy program. Its behind-the-scenes setting drew heavily on Fey’s experience working at Saturday Night Live, which also explains the show’s connection to 30 Rockefeller Plaza and NBC Studios.
Although the series was primarily produced as a single-camera sitcom, its episode count includes two special live episodes. Those broadcasts were presented from Studio 8H in 30 Rockefeller Plaza, but they count as regular episodes within the show’s seven-season total. The number 138 refers to produced and aired story episodes, not seasons, production blocks, or the number of episodes in an individual season.