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All Quincy population data above are from the US Census Bureau.
The population data for Quincy are from the Census' American Community Survey 2017 5-year estimates and the Census' 2018 Population Estimates. The demographic data for Blandinsville, Crystal Lake, Fairbury, and Romeoville are the most current, comparable demographics available from the US Census Bureau, are from the American Community Survey 2017 5-year estimates, and were downloaded on 6 December 2018. Check out our FAQ section for more details.
With 40,042 people, Quincy is the 41st most populated city in the state of Illinois out of 1,367 cities. But watch out, Quincy, because Crystal Lake with 40,036 people and Romeoville with 39,624 people are right behind you.
The largest Quincy racial/ethnic groups are White (89.0%) followed by Black (6.1%) and Two or More (2.0%).
In 2017, the median household income of Quincy residents was $42,854. Quincy households made slightly more than Blandinsville households ($42,788) and Fairbury households ($42,808) . However, 16.5% of Quincy residents live in poverty.
The median age for Quincy residents is 39.9 years young.
86% of people CANNOT find the data they're looking for on the US Census Bureau website. Source: Nielsen Norman Group
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