| Rank | City | 1940 Population | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Cleveland | 878,336 | -0.2% |
| 2 | Cincinnati | 455,610 | 0.1% |
| 3 | Columbus | 306,087 | 0.5% |
| 4 | Toledo | 282,349 | -0.3% |
| 5 | Akron | 244,791 | -0.4% |
| 6 | Dayton | 210,718 | 0.5% |
| 7 | Youngstown | 167,720 | -0.1% |
| 8 | Canton | 108,401 | 0.3% |
In 1940, the largest city in Ohio was Cleveland, with a population of 878,336. The second largest city is Cincinnati, with a population of 455,610.
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