| Index | Duncan | Nebraska | National |
| Income per capita | $40,014 | $42,745 | $44,883 |
| Median household income | $58,562 | $81,154 | $81,333 |
| Median income owner occupied | $56,313 | $102,351 | $106,172 |
| Median income renter occupied | $0 | $47,625 | $52,080 |
| Median earnings male | $74,821 | $53,280 | $54,343 |
| Median earnings female | $44,341 | $37,214 | $38,439 |
| Unemployment rate | 0.3% | 3.1% | 4.9% |
| Poverty level | 2.3% | 12.4% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 11.8% | 11.8% |
| Manufacturing sector | 33.6% | 33.6% |
| Financial & insurance services | 0.9% | 0.9% |
| Wholesale & retail services | 6.4% | 6.4% |
| Public administration | 1.8% | 1.8% |
| Transportation, warehousing & utilities | 13.6% | 13.6% |
| Education, health & social services | 4.5% | 4.5% |
| Other | 27.3% | 27.3% |
| City | Population | Household Income | National Avg. |
| Osceola, NE | 855 | $102,233 | 25.7% |
| Lakeview, NE | 392 | $99,491 | 22.3% |
| Shelby, NE | 741 | $98,701 | 21.4% |
| Monroe, NE | 305 | $90,054 | 10.7% |
| Rising City, NE | 428 | $89,760 | 10.4% |
| Duncan, NE | 502 | $58,562 | 28.0% |
| City | Population | Household Income | National Avg. |
| Walsh, CO | 502 | $45,063 | 44.6% |
| Roopville, GA | 502 | $127,338 | 56.6% |
| Bay View Gardens, IL | 502 | $52,994 | 34.8% |
| Burnettsville, IN | 502 | $69,114 | 15.0% |
| Cawood, KY | 502 | $55,567 | 31.7% |
| Duncan, NE | 502 | $58,562 | 28.0% |