Biggest Cities in Pennsylvania

Top 100 Biggest Cities In Pennsylvania (1870 Census)

Rank	City	1870 Population	Growth Rate (Annual)
1	Philadelphia	674,022	1.8%
2	Pittsburgh	86,076	5.7%
3	Allegheny	53,180	6.4%
4	Scranton	35,092	–
5	Reading	33,930	3.9%
6	Harrisburg	23,104	5.6%
7	Lancaster	20,233	1.4%
8	Erie	19,646	–
9	Williamsport	16,030	–

View Biggest Pennsylvania Cities From Different Years

1800s	1840 1850 1860 1870 1880 1890
1900s	1900 1910 1920 1930 1940 1950 1960 1970 1980 1990
2000s	2000 2010 2020 2022

What was the largest city in Pennsylvania in 1870?

In 1870, the largest city in Pennsylvania was Philadelphia, with a population of 674,022. The second largest city is Pittsburgh, with a population of 86,076.