<P> Gossip Girl is a teen drama which premiered on September 19, 2007 in the United States on The CW . Gossip Girl is based on the young - adult book series of the same name written by Cecily von Ziegesar, and was developed for television by The O.C. creators Josh Schwartz and Stephanie Savage . The series follows the lives of the young, wealthy, and social elite residing in the Upper East Side of Manhattan, and is narrated by an unseen and seemingly omniscient character, "Gossip Girl", whose blog is widely read among the characters . </P> <P> A total of 121 episodes of Gossip Girl were aired over six seasons, between September 19, 2007 and December 17, 2012 . </P> <Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> <Th> Average viewership (in millions) </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 18 </Td> <Td_colspan="1"> September 19, 2007 (2007 - 09 - 19) </Td> <Td> May 19, 2008 (2008 - 05 - 19) </Td> <Td> 2.6 </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 25 </Td> <Td_colspan="1"> September 1, 2008 (2008 - 09 - 01) </Td> <Td> May 18, 2009 (2009 - 05 - 18) </Td> <Td> 2.8 </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 22 </Td> <Td_colspan="1"> September 14, 2009 (2009 - 09 - 14) </Td> <Td> May 17, 2010 (2010 - 05 - 17) </Td> <Td> 2.0 </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 22 </Td> <Td_colspan="1"> September 13, 2010 (2010 - 09 - 13) </Td> <Td> May 16, 2011 (2011 - 05 - 16) </Td> <Td> 1.6 </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> 5 </Td> <Td_colspan="2"> 24 </Td> <Td_colspan="1"> September 26, 2011 (2011 - 09 - 26) </Td> <Td> May 14, 2012 (2012 - 05 - 14) </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> 6 </Td> <Td_colspan="2"> 10 </Td> <Td_colspan="1"> October 8, 2012 (2012 - 10 - 08) </Td> <Td> December 17, 2012 (2012 - 12 - 17) </Td> <Td> 0.9 </Td> </Tr> </Table>

How many episodes are there in gossip girl