| Index | Brook | Indiana | National |
| Income per capita | $19,472 | $26,117 | $29,829 |
| Median household income | $42,689 | $50,433 | $55,322 |
| Median income owner occupied | $44,861 | $62,593 | $70,586 |
| Median income renter occupied | $28,882 | $29,285 | $35,192 |
| Median earnings male | $28,942 | $36,194 | $36,919 |
| Median earnings female | $18,864 | $23,580 | $26,250 |
| Unemployment rate | 2.8% | 4.4% | 4.7% |
| Poverty level | 21.7% | 15.0% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 14.1% | 14.1% |
| Manufacturing sector | 40.9% | 40.9% |
| Financial & insurance services | 0.5% | 0.5% |
| Wholesale & retail services | 14.1% | 14.1% |
| Public administration | 1.4% | 1.4% |
| Transportation, warehousing & utilities | 10.0% | 10.0% |
| Education, health & social services | 4.1% | 4.1% |
| Other | 15.0% | 15.0% |
| City | Population | Household Income | National Avg. |
| Iroquois, IL | 287 | $61,964 | 12.0% |
| Remington, IN | 1,403 | $57,431 | 3.8% |
| Earl Park, IN | 353 | $52,917 | 4.3% |
| Beaverville, IL | 370 | $49,464 | 10.6% |
| Rensselaer, IN | 6,151 | $48,989 | 11.4% |
| Brook, IN | 1,000 | $42,689 | 22.8% |
| City | Population | Household Income | National Avg. |
| Green Valley CDP (Los Angeles County), CA | 1,000 | $71,875 | 29.9% |
| Whitehall, MT | 1,000 | $39,342 | 28.9% |
| Adams Center, NY | 1,000 | $63,344 | 14.5% |
| New Washington, OH | 1,000 | $57,583 | 4.1% |
| Brushy, OK | 1,000 | $44,286 | 19.9% |
| Brook, IN | 1,000 | $42,689 | 22.8% |
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