Illinois · United States
Quincy population
40,780people · latest figure
Quincy has a population of 40,780, making it the 1080th largest place we list in United States. It is in Illinois.
Quincy holds under a tenth of one per cent of United States's 349,035,494 people. New York City, the largest place we list there, is 216 times its size. Twenty years earlier the World Gazetteer recorded 89,168, a fall of 54%.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
Quincy is in Illinois, which has 945 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Huntsville | Texas | 40,938 |
| Sumter | South Carolina | 40,816 |
| Annapolis | Maryland | 40,812 |
| Wilkes-Barre | Pennsylvania | 40,780 |
| Holyoke | Massachusetts | 40,684 |
| Sherman | Texas | 40,667 |
All places in United States → · Illinois →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.