Population growth in suburban Cook and the five collar counties stalled to what is easily the slowest rate since 1950, according to new data released Aug. 12 by the U.S. Census Bureau.
Though it’s not a collar county, Kendall County, located about 50 miles southwest of Chicago and home to communities including Oswego and Yorkville, was Illinois’ fastest-growing county, growing nearly 15%, according to the AP.
What happened in your area?
Scroll below to see population changes by Chicago-area county for places with 5,000 or more people:
Cook County
The population in 2020 was 5.28 million, an increase of 1.6% since 2010.
DuPage County
The population in 2020 was 932,877, an increase of 1.7% since 2010.
Kane County
The population in 2020 was 516,522, an increase of 0.2% since 2010.
Lake County
The population in 2020 was 714,342, an increase of 1.6% since 2010.
McHenry County
The population in 2020 was 310,229, an increase of 0.5% since 2010.
Will County
The population in 2020 was 696,355, an increase of 2.8% since 2010.
Sources: Tribune reporting and archives; U.S. Census Bureau
