Bossier City is a city in Bossier Parish in the northwestern region of the state of Louisiana in the United States. It is the second-most populou…Bossier City is a city in Bossier Parish in the northwestern region of the state of Louisiana in the United States. It is the second-most populous city in the Shreveport–Bossier City metropolitan statistical area. In 2020, it had a total population of 62,701, up from 61,315 in 2010.