| Index | Knollwood | Illinois | National |
| Income per capita | $60,123 | $47,397 | $44,883 |
| Median household income | $188,266 | $88,967 | $81,333 |
| Median income owner occupied | $235,854 | $111,557 | $106,172 |
| Median income renter occupied | $154,375 | $52,117 | $52,080 |
| Median earnings male | $0 | $60,185 | $54,343 |
| Median earnings female | $59,255 | $40,368 | $38,439 |
| Unemployment rate | 2.7% | 6.6% | 4.9% |
| Poverty level | 3.0% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 8.8% | 8.8% |
| Manufacturing sector | 11.1% | 11.1% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 35.9% | 35.9% |
| Public administration | 12.9% | 12.9% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 17.1% | 17.1% |
| Other | 10.6% | 10.6% |
| City | Population | Household Income | National Avg. |
| Winnetka, IL | 12,825 | $376,531 | 362.9% |
| Kenilworth, IL | 2,429 | $355,721 | 337.4% |
| Riverwoods, IL | 3,636 | $342,690 | 321.3% |
| Kildeer, IL | 4,158 | $320,299 | 293.8% |
| Long Grove, IL | 8,145 | $313,087 | 284.9% |
| Knollwood, IL | 1,738 | $188,266 | 131.5% |
| City | Population | Household Income | National Avg. |
| Cedarville, AR | 1,738 | $69,629 | 14.4% |
| Limestone Creek, FL | 1,738 | $102,027 | 25.4% |
| Angola on the Lake, NY | 1,738 | $75,605 | 7.0% |
| Port Carbon, PA | 1,738 | $76,824 | 5.5% |
| Northampton, NB | 1,738 | n/a | |
| Knollwood, IL | 1,738 | $188,266 | 131.5% |