World Population Review In a city comprised of 20+ million, give or take exploded in the 19th century 8.55 million first United States population of 8.55 million 8.5 million World Population Review In a city comprised of 20+ million, give or take more than eight and a half million estimated population of more than eight million people Over 8 million people In a city comprised of 20+ million, give or take entire population 8.5 million explotó en el siglo XIX population New York City of non-European or multiracial descent New York City, NY 8.6 million population 8.6 million In a city comprised of 20+ million, give or take population