1930
The 1930 Census was the Fifteenth. The Census Bureau provides a list of the 100 largest cities in that year.
| Rank | City | State | Population | Notes |
| 1 | New York | New York | 6,930,446 | |
| 2 | Chicago | Illinois | 3,376,438 | |
| 3 | Philadelphia | Pennsylvania | 1,950,961 | |
| 4 | Detroit | Michigan | 1,568,662 | |
| 5 | Los Angeles | California | 1,238,048 | First West Coast city to make the Top 5. |
| 6 | Cleveland | Ohio | 900,429 | |
| 7 | St. Louis | Missouri | 821,960 | |
| 8 | Baltimore | Maryland | 804,874 | |
| 9 | Boston | Massachusetts | 781,188 | |
| 10 | Pittsburgh | Pennsylvania | 669,817 |
Read more about this topic: Largest Cities In The United States By Population By Decade