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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' 2017 Population Estimates. The demographic data for Blandinsville, Carol Stream, Crystal Lake, and Fairbury 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 40,587 people, Quincy is the 42nd most populated city in the state of Illinois out of 1,367 cities. But watch out, Quincy, because Carol Stream with 40,231 people and Crystal Lake with 40,331 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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