| Year | Population ( #) | Area (mi2) | Density (#/mi2) |
|---|---|---|---|
| 1870 | 1,107 | - | - |
| 1880 | 3,533 | - | - |
| 1890 | 42,837 | - | - |
| 1900 | 80,671 | - | - |
| 1910 | 237,194 | 55.9 | 4,243 |
| 1920 | 315,312 | 58.6 | 5,381 |
| 1930 | 365,583 | 68.5 | 5,337 |
| 1940 | 368,302 | 68.5 | 5,377 |
| 1950 | 467,591 | 70.8 | 6,604 |
| 1960 | 557,087 | 88.5 | 6,295 |
| 1970 | 530,831 | 83.6 | 6,350 |
| 1980 | 493,846 | 83.6 | 5,907 |
| 1990 | 516,259 | 83.9 | 6,153 |
| 2000 | 563,374 | 83.9 | 6,715 |
| 2010 | 608,660 | 83.9 | 7,255 |