The 5 largest ethnic groups in Quincy, IL are White (Non-Hispanic) (86.3%), Black or African American (Non-Hispanic) (5.19%), Two Races Excluding Other, & Three or More Races (Non-Hispanic) (4.12%), Asian (Non-Hispanic) (1.03%), and White (Hispanic) (0.939%).
N/A of the households in Quincy, IL reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99.3% of the residents in Quincy, IL are U.S. citizens.