It extends along the west bank of the Red River into neighboring Bossier Parish. The bulk of Shreveport is in Caddo Parish, of which it is the parish seat. It is the third-most populous city in Louisiana after New Orleans and Baton Rouge. Shreveport ( / ˈ ʃ r iː v p ɔːr t/ SHREEV-port) is a city in the U.S.