1820 - 10 cities were over 10000 people
New York 123000, Philadelphia 63000, Baltimore 62000, Boston 43000, New Orleans 27000, Charleston 25000, Northern Liberties 19500, Southwark 14000, Washington 13000, Salem 12000

1850 - 10 biggest cities
NYC 500000, Baltimore 170000, Boston 140000, Philadelphia 121000, New Orleans 116000, Cincinnati 114000, Brooklyn 96000, St. Louis 77000, Spring Garden 58000, Albany 51000.

Three main immigrants - Germany, Ireland, China