US Census Reveals Growth In Iowa For Quad Cities Region, Decrease In Illinois
Data from the 2020 US Census has officially been released showing population growth in states and counties, and population declines in other areas. Locally, the Quad Cities is seeing both sides of the coin. The Iowa side of the Quad Cities has seen a significant increase while the Illinois side is losing residents.
After a delay due to COVID-19, the United States Census Bureau has released its official population numbers for states and counties within each state from surveys taken in 2020 in the midst of a pandemic. The 2020 Census shows some major changes in the Quad Cities area including an increase on the Iowa side and a decrease on the Illinois side.
Iowa
The state of Iowa saw an overall increase in population. The 2020 Census data reports Iowa's new total population as 3,190,369. The 2010 Census reported Iowa's total population as 3,046,355. That's a numeric change of 144,014 (+4.7%).
Below are Iowa counties within the Quad Cities area and their population changes.
Scott County
- 2010 Total Population = 165,224
- 2020 Total Population = 174,669
- Numeric Change = 9,445
- Percent Change = +5.7%
Muscatine County
- 2010 Total Population = 42,745
- 2020 Total Population = 43,235
- Numeric Change = 490
- Percent Change = +1.1%
Clinton County
- 2010 Total Population = 49,460
- 2020 Total Population = 49116
- Numeric Change = -2,656
- Percent Change = -5.4%
Illinois
Overall, Illinois as a state saw a population decline. The 2020 Census data reports Illinois' new total population as 12,812,508. The 2010 Census reported Illinois' total population as 12,794,384. That's a numeric change of -18,124 (-0.1%).
Below are Illinois counties within the Quad Cities area and their population changes.
Rock Island County
- 2010 Total Population = 147,546
- 2020 Total Population = 144,672
- Numeric Change = -2,874
- Percent Change = -1.9%
Mercer County
- 2010 Total Population = 16,434
- 2020 Total Population = 15,699
- Numeric Change = -735
- Percent Change = -4.5%
Henry County
- 2010 Total Population = 50,486
- 2020 Total Population = 49,284
- Numeric Change = -1,202
- Percent Change = -2.4%
More details can be found on the United States Census Bureau website.