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All Rock Island population data above are from the US Census Bureau.
The population data for Rock Island are from the Census' American Community Survey 2017 5-year estimates and the Census' 2018 Population Estimates. The demographic data for Addison, Dupo, Park Ridge, and Scott AFB 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 37,678 people, Rock Island is the 49th most populated city in the state of Illinois out of 1,367 cities. But watch out, Rock Island, because Addison with 36,724 people and Park Ridge with 37,240 people are right behind you.
The largest Rock Island racial/ethnic groups are White (62.4%) followed by Black (19.3%) and Hispanic (10.7%).
In 2017, the median household income of Rock Island residents was $45,244. Rock Island households made slightly more than Dupo households ($45,203) and Scott AFB households ($45,217) . However, 19.8% of Rock Island residents live in poverty.
The median age for Rock Island residents is 37.0 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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