he first season of Switched at Birth, an American drama television series, began airing on ABC Family on June 6, 2011 and concluded on October 22, 2012 after 30 episodes.

The one-hour scripted drama revolves around two young women who were switched at birth and grew up in very different environments.

On August 1, 2011, ABC Family announced that they were ordering more episodes for the first season of Switched at Birth, bringing the first season to a total of 30 episodes. The series continued with a winter premiere on January 3, 2012, ending on March 20, 2012, with 12 episodes. The series began airing its remaining 8 episodes for its first season, beginning September 3, 2012.

Overview from themoviedb.org