| Index | Duncan | Oklahoma | National |
| Income per capita | $38,352 | $38,159 | $44,883 |
| Median household income | $74,596 | $72,914 | $81,333 |
| Median income owner occupied | $92,201 | $89,008 | $106,172 |
| Median income renter occupied | $53,009 | $46,375 | $52,080 |
| Median earnings male | $60,421 | $51,967 | $54,343 |
| Median earnings female | $33,689 | $34,837 | $38,439 |
| Unemployment rate | 3.7% | 3.8% | 4.9% |
| Poverty level | 16.5% | 16.5% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 10.9% | 10.9% |
| Manufacturing sector | 12.9% | 12.9% |
| Financial & insurance services | 2.0% | 2.0% |
| Wholesale & retail services | 20.0% | 20.0% |
| Public administration | 2.4% | 2.4% |
| Transportation, warehousing & utilities | 6.8% | 6.8% |
| Education, health & social services | 8.4% | 8.4% |
| Other | 36.3% | 36.3% |
| City | Population | Household Income | National Avg. |
| Empire City, OK | 860 | $120,908 | 48.7% |
| Central High, OK | 1,556 | $95,603 | 17.5% |
| Bray, OK | 1,084 | $94,988 | 16.8% |
| Marlow, OK | 4,563 | $67,707 | 16.8% |
| Comanche, OK | 1,946 | $54,673 | 32.8% |
| Duncan, OK | 23,311 | $74,596 | 8.3% |
| City | Population | Household Income | National Avg. |
| Machesney Park, IL | 23,320 | $97,031 | 19.3% |
| Roselle, IL | 23,298 | $135,414 | 66.5% |
| Lennox, CA | 23,290 | $68,983 | 15.2% |
| Keene, NH | 23,283 | $86,912 | 6.9% |
| Allison Park, PA | 23,344 | $124,997 | 53.7% |
| Duncan, OK | 23,311 | $74,596 | 8.3% |