| | North Liberty, IA | Northbrook, IL | United States |
| Unemployment Rate | 3.7% | 5.2% | 6.0% |
| Recent Job Growth | 1.2% | -0.2% | 1.6% |
| Future Job Growth | 32.2% | 27.3% | 33.5% |
| Sales Taxes | 6.0% | 10.3% | 6.2% |
| Income Taxes | 7.4% | 5.0% | 4.6% |
| Income per Cap. | $44,828 | $78,195 | $37,638 |
| Household Income | $96,351 | $143,506 | $69,021 |
| Family Median Income | $117,155 | $188,533 | $85,028 |
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| Est. Households By Income | | | |
| | North Liberty, IA | Northbrook, IL | United States |
| Income Less Than 15K | 3.2% | 3.8% | 9.4% |
| Income between 15K and 20K | 0.9% | 2.3% | 3.8% |
| Income between 20K and 30K | 4.0% | 3.1% | 8.1% |
| Income between 30K and 40K | 5.6% | 3.9% | 8.0% |
| Income between 40K and 50K | 10.2% | 3.8% | 7.6% |
| Income between 50K and 60K | 4.8% | 6.2% | 7.2% |
| Income between 60K and 75K | 7.4% | 4.2% | 9.6% |
| Income between 75K and 100K | 16.6% | 8.5% | 12.8% |
| Income between 100K and 150K | 25.5% | 15.6% | 16.3% |
| Income between 150K and 200K | 9.9% | 11.1% | 7.8% |
| Income greater than 200K | 12.0% | 37.6% | 9.5% |
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| Population By Occupation | | | |
| | North Liberty, IA | Northbrook, IL | United States |
| Management, business, finance | 22.8% | 29.5% | 16.4% |
| Engineering, computers, science | 9.5% | 10.8% | 6.5% |
| Community, social services | 2.1% | 1.4% | 1.8% |
| Legal | 0.7% | 4.6% | 1.2% |
| Education, library | 8.4% | 8.0% | 6.2% |
| Arts, design, media, sports, entertainment | 2.6% | 4.1% | 2.0% |
| Healthcare practitioners and technology | 13.7% | 8.7% | 6.2% |
| Healthcare support | 0.8% | 0.8% | 3.3% |
| Firefighters, law enforcement | 1.9% | 0.4% | 2.1% |
| Food preparation, serving | 2.4% | 1.0% | 5.4% |
| Building maintenance | 1.6% | 0.7% | 3.6% |
| Personal care | 3.9% | 3.2% | 2.6% |
| Sales, office, administrative support | 17.5% | 20.5% | 20.9% |
| Farming, fishing, forestry | 0.0% | 0.0% | 0.6% |
| Construction, extraction, maintenance/repair | 4.6% | 2.3% | 8.1% |
| Production, transportation, material moving | 7.4% | 3.9% | 13.1% |