| Index | Smithfield | Illinois | National |
| Income per capita | $39,025 | $47,397 | $44,883 |
| Median household income | $64,243 | $88,967 | $81,333 |
| Median income owner occupied | $68,573 | $111,557 | $106,172 |
| Median income renter occupied | $0 | $52,117 | $52,080 |
| Median earnings male | $69,146 | $60,185 | $54,343 |
| Median earnings female | $29,496 | $40,368 | $38,439 |
| Unemployment rate | 6.3% | 6.6% | 4.9% |
| Poverty level | 13.3% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 40.0% | 40.0% |
| Manufacturing sector | 20.0% | 20.0% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 2.9% | 2.9% |
| Public administration | 8.6% | 8.6% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 5.7% | 5.7% |
| Other | 22.9% | 22.9% |
| City | Population | Household Income | National Avg. |
| Adair, IL | 184 | $118,499 | 45.7% |
| Fairview, IL | 466 | $85,620 | 5.3% |
| Norris, IL | 263 | $77,888 | 4.2% |
| Dunfermline, IL | 395 | $77,374 | 4.9% |
| Lewistown, IL | 2,073 | $76,509 | 5.9% |
| Smithfield, IL | 189 | $64,243 | 21.0% |
| City | Population | Household Income | National Avg. |
| Deer Creek, AZ | 189 | $65,128 | 19.9% |
| Lodoga, CA | 189 | $0 | 100.0% |
| Berlin, IL | 189 | $92,780 | 14.1% |
| Maquon, IL | 189 | $71,480 | 12.1% |
| Mission Woods, KS | 189 | $373,170 | 358.8% |
| Smithfield, IL | 189 | $64,243 | 21.0% |