Interstellar premiered in California.
Interstellar (film) . Interstellar premiered on October 26 , 2014 in Los Angeles . Los Angeles ( [ lɒs_ˈændʒəlᵻs ] , Spanish for `` The Angels '' ; [ los ˈaŋxeles ] ) , officially the City of Los Angeles and often known by its initials L.A. , is the cultural , financial , and commercial center of Southern California . With a census-estimated 2017 population of 4,042,000 , it is the second-most populous city in the United States ( after New York City ) and the most populous city in the state of California .