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2020 Census Shows Scott Co. Pop. Growth, Rock Island Co. Decline

qc 2020 census data table bistate Capture.PNG
Bi-State Regional Commission
Bi-State Regional Commission

Over the last ten years, the population in the Quad Cities area has grown 1.2% to 427,559.

And the head of the Bi-State Regional Commission is generally pleased with the recently released results of the 2020 census.


Executive Director, Denise Bulat, says Scott County grew 5.7% since 2010. That's 9,445 more people.

Bulat1 :22 ...losses. (most gains in leclaire, eldridge, blue grass)

The number of people living in Davenport rose to nearly 101,724.

Since 2010, Rock Island County lost 1.9% of its population, or 2,874 people. But Bulat says that's not a huge loss.

Bulat2 :17 ...those communities.

Mercer County's population fell by 4.5%. While Muscatine County's grew slightly, by 1.1%.

Bi-State's leader says five counties are included in the Quad Cities area census figures: Henry, Mercer, and Rock Island in Illinois, and Muscatine and Scott in Iowa. Below you'll find tables with figures for Illinois municipalities followed by Iowa municipalities.

Rock Island County cities 2020 census data bistate.png
Bi-State Regional Commission
Bi-State Regional Commission
Illinois cities, towns, villages
Scott Co Iowa cities 2020 census data table bistate Capture.PNG

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