| Index | Crystal Lake | Illinois | National |
| Income per capita | $39,782 | $31,502 | $29,829 |
| Median household income | $91,456 | $59,196 | $55,322 |
| Median income owner occupied | $108,710 | $75,354 | $70,586 |
| Median income renter occupied | $50,074 | $34,488 | $35,192 |
| Median earnings male | $53,553 | $40,474 | $36,919 |
| Median earnings female | $31,599 | $27,197 | $26,250 |
| Unemployment rate | 3.3% | 5.3% | 4.7% |
| Poverty level | 6.6% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 11.3% | 11.3% |
| Manufacturing sector | 17.0% | 17.0% |
| Financial & insurance services | 4.8% | 4.8% |
| Wholesale & retail services | 15.0% | 15.0% |
| Public administration | 4.9% | 4.9% |
| Transportation, warehousing & utilities | 6.6% | 6.6% |
| Education, health & social services | 9.6% | 9.6% |
| Other | 27.9% | 27.9% |
| City | Population | Household Income | National Avg. |
| Kildeer, IL | 4,007 | $212,500 | 284.1% |
| Hawthorn Woods, IL | 8,313 | $206,875 | 273.9% |
| North Barrington, IL | 2,789 | $197,188 | 256.4% |
| Trout Valley, IL | 509 | $190,231 | 243.9% |
| Inverness, IL | 7,959 | $185,558 | 235.4% |
| Crystal Lake, IL | 39,685 | $91,456 | 65.3% |
| City | Population | Household Income | National Avg. |
| Marlborough, MA | 39,663 | $83,469 | 50.9% |
| Romeoville, IL | 39,644 | $85,888 | 55.3% |
| Indian Trail, NC | 39,644 | $86,512 | 56.4% |
| Royal Palm Beach, FL | 39,615 | $83,636 | 51.2% |
| Sumter, SC | 39,758 | $40,760 | 26.3% |
| Crystal Lake, IL | 39,685 | $91,456 | 65.3% |