| Area | 1990 | 2000 | 2007 | 2010(est.) | 1990-2000 | 2000-2012 |
| Troy City | 19,956 | 21,999 | 22,189 | 23,402 | 10.24% | 6.3% |
| Troy area | 28,736 | 32,869 | 33,879 | 34,535 | 14.38% | 5.1% |
| Miami County | 93,204 | 98,868 | 102,592 | 105,002 | 6.08% | 6.22% |
| Dayton MSA | 843,857 | 848,153 | 842,572 | 835,991 | 0.51% | -1.4% |
| Ohio |
The population within and around the City of Troy continues to grow at a slow, but steady pace. Some basic data points provide insight to the positive aspects of the Troy community.