<P> The first season of 90210 , an American television series , began on September 2 , 2008 . Gabe Sachs and Jeff Judah are executive producers for the first season , after original producer Rob Thomas dropped out to focus on other projects . The series premiered to 4.65 million viewers , and broke records for The CW at the time , becoming their highest rated premiere in viewers and in Adults 18 -- 49 with a 2.6 rating . On September 22 , 2008 , after airing just four episodes , the network gave the series a full - season order of 24 episodes . </P>
<P> The first season of 90210 , an American television series , began on September 2 , 2008 . Gabe Sachs and Jeff Judah are executive producers for the first season , after original producer Rob Thomas dropped out to focus on other projects . The series premiered to 4.65 million viewers , and broke records for The CW at the time , becoming their highest rated premiere in viewers and in Adults 18 -- 49 with a 2.6 rating . On September 22 , 2008 , after airing just four episodes , the network gave the series a full - season order of 24 episodes . </P>
how many episodes are in 90210 season 1
how many episodes are in 90210 season 1
24
24