Line graph showing population of Philadelphia. Data include the following years and respective populations 1790, 28,522 1800, 41,220 1810, 53,722 1820, 63,802 1830, 80,462 1840, 93,665 1850, 121,376 1860, 565,529 1870, 674,022 1880, 847,170 1890, 1,046,964. Public Domain Based on the graph and your knowledge of U.S. history, how did the decade from 1850 to 1860 change Philadelphia? It brought waves of new people seeking work, who demanded housing and services. It brought waves of new immigrants, who disliked the city and left before the 1900s. It brought increased growth due to people leaving farms and resulted in greater skilled labor. It brought increased growth in manufacturing and resulted in a more stable social structure.