10 Largest US Cities by Decade

1910

1. New York (NY) – population: 4,766,883
2. Chicago (IL) – population: 2,185,283
3. Philadelphia (PA) – population: 1,549,008
4. St. Louis (MO) – population: 687,029
5. Boston (MA) – population: 670,585
6. Cleveland (OH) – population: 560,663
7. Baltimore (MD) – population: 558,485
8. Pittsburgh (PA) – population: 533,905
9. Detroit (MI) – population: 465,766
10. Buffalo (NY) – population: 423,715

Nothing of note has happened after the census number 16 apart from some minor changes at the bottom of the list. New York has, however, grew in population number considerably thanks to the Interborough Rapid Transit system and its original underground New York City subway line.