| Index | Quincy | Illinois | National |
| Income per capita | $43,546 | $47,397 | $44,883 |
| Median household income | $69,000 | $88,967 | $81,333 |
| Median income owner occupied | $90,181 | $111,557 | $106,172 |
| Median income renter occupied | $42,996 | $52,117 | $52,080 |
| Median earnings male | $57,079 | $60,185 | $54,343 |
| Median earnings female | $38,865 | $40,368 | $38,439 |
| Unemployment rate | 3.4% | 6.6% | 4.9% |
| Poverty level | 15.3% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 6.3% | 6.3% |
| Manufacturing sector | 23.3% | 23.3% |
| Financial & insurance services | 1.8% | 1.8% |
| Wholesale & retail services | 20.7% | 20.7% |
| Public administration | 4.8% | 4.8% |
| Transportation, warehousing & utilities | 7.4% | 7.4% |
| Education, health & social services | 9.3% | 9.3% |
| Other | 24.0% | 24.0% |
| City | Population | Household Income | National Avg. |
| Columbus, IL | 83 | $96,438 | 18.6% |
| Liberty, IL | 407 | $95,883 | 17.9% |
| Payson, IL | 1,427 | $93,443 | 14.9% |
| Mendon, IL | 1,115 | $84,840 | 4.3% |
| Coatsburg, IL | 185 | $84,154 | 3.5% |
| Quincy, IL | 41,163 | $69,000 | 15.2% |
| City | Population | Household Income | National Avg. |
| Romeoville, IL | 41,178 | $127,466 | 56.7% |
| Vineyard, CA | 41,185 | $135,768 | 66.9% |
| Calexico, CA | 41,129 | $63,268 | 22.2% |
| La Puente, CA | 41,123 | $99,088 | 21.8% |
| Marion, IA | 41,096 | $109,229 | 34.3% |
| Quincy, IL | 41,163 | $69,000 | 15.2% |