| Rank | City | 1910 Population | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Philadelphia | 1,549,008 | 1.8% |
| 2 | Pittsburgh | 533,905 | 5.2% |
| 3 | Scranton | 129,867 | 2.4% |
| 4 | Reading | 96,071 | 2.0% |
| 5 | Youngstown | 79,066 | – |
| 6 | Wilkes-Barre | 67,105 | 2.6% |
| 7 | Erie | 66,525 | 2.4% |
| 8 | Harrisburg | 64,186 | 2.5% |
| 9 | Johnstown | 55,482 | – |
In 1910, the largest city in Pennsylvania was Philadelphia, with a population of 1,549,008. The second largest city is Pittsburgh, with a population of 533,905.
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