| Index | Quincy | California | National |
| Income per capita | $42,323 | $45,980 | $44,883 |
| Median household income | $81,403 | $95,535 | $81,333 |
| Median income owner occupied | $175,844 | $130,228 | $106,172 |
| Median income renter occupied | $57,582 | $64,137 | $52,080 |
| Median earnings male | $38,130 | $52,776 | $54,343 |
| Median earnings female | $0 | $38,938 | $38,439 |
| Unemployment rate | 1.0% | 6.8% | 4.9% |
| Poverty level | 21.7% | 15.8% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 12.7% | 12.7% |
| Manufacturing sector | 0.0% | 0.0% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 1.0% | 1.0% |
| Public administration | 21.4% | 21.4% |
| Transportation, warehousing & utilities | 10.2% | 10.2% |
| Education, health & social services | 13.0% | 13.0% |
| Other | 41.6% | 41.6% |
| City | Population | Household Income | National Avg. |
| Keddie, CA | 69 | $161,947 | 99.1% |
| Meadow Valley, CA | 498 | $149,272 | 83.5% |
| Cromberg, CA | 322 | $102,346 | 25.8% |
| East Quincy, CA | 2,367 | $92,336 | 13.5% |
| Greenville, CA | 805 | $47,335 | 41.8% |
| Quincy, CA | 1,769 | $81,403 | 0.1% |
| City | Population | Household Income | National Avg. |
| Girard, IL | 1,769 | $65,474 | 19.5% |
| Mancelona, MI | 1,769 | $64,658 | 20.5% |
| Heidelberg, TX | 1,769 | $38,334 | 52.9% |
| Chambord, QC | 1,769 | n/a | |
| Beaver Dam, AZ | 1,768 | $37,287 | 54.2% |
| Quincy, CA | 1,769 | $81,403 | 0.1% |