| O'Neill City Guide & Data | |
|---|---|
| Population (2009 est.) | 3,249 |
| Population (2000) | 3,640 |
| Population growth | -10.7% |
| Household income | $44,682 |
| Income per capita | $23,197 |
| Male/Female ratio | 0.79:1 |
| Males 18-39 years | 23.8% |
| Females 18-39 years | 22.0% |
| Married (15yrs and older) | 62.1% |
| Have children (under 18yrs) | 48.4% |