| Rock Springs City Guide & Data | |
|---|---|
| Population (2009 est.) | 20,905 |
| Population (2000) | 18,968 |
| Population growth | 10.2% |
| Household income | $61,321 |
| Income per capita | $27,930 |
| Male/Female ratio | 0.99:1 |
| Males 18-39 years | 30.5% |
| Females 18-39 years | 32.3% |
| Married (15yrs and older) | 57.4% |
| Have children (under 18yrs) | 52.2% |