| Index | Buffalo | Illinois | National |
| Income per capita | $30,388 | $31,502 | $29,829 |
| Median household income | $52,750 | $59,196 | $55,322 |
| Median income owner occupied | $56,250 | $75,354 | $70,586 |
| Median income renter occupied | $31,071 | $34,488 | $35,192 |
| Median earnings male | $48,750 | $40,474 | $36,919 |
| Median earnings female | $25,625 | $27,197 | $26,250 |
| Unemployment rate | 2.8% | 5.3% | 4.7% |
| Poverty level | 11.0% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 17.2% | 17.2% |
| Manufacturing sector | 2.0% | 2.0% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 11.1% | 11.1% |
| Public administration | 14.1% | 14.1% |
| Transportation, warehousing & utilities | 8.1% | 8.1% |
| Education, health & social services | 9.1% | 9.1% |
| Other | 38.4% | 38.4% |
| City | Population | Household Income | National Avg. |
| Sherman, IL | 4,470 | $123,232 | 122.8% |
| Leland Grove, IL | 1,237 | $111,458 | 101.5% |
| Spaulding, IL | 956 | $106,250 | 92.1% |
| Rochester, IL | 3,778 | $95,463 | 72.6% |
| Williamsville, IL | 1,468 | $86,326 | 56.0% |
| Buffalo, IL | 345 | $52,750 | 4.6% |
| City | Population | Household Income | National Avg. |
| Iliff, CO | 345 | $42,308 | 23.5% |
| Odum, GA | 345 | $47,000 | 15.0% |
| West Okoboji, IA | 345 | $70,625 | 27.7% |
| Loda, IL | 345 | $50,714 | 8.3% |
| Sedalia, KY | 345 | $45,551 | 17.7% |
| Buffalo, IL | 345 | $52,750 | 4.6% |