Real IRS tax-return address changes, not a Census population estimate -- people who
actually filed from a different county the following year. Positive means more people
left than arrived; negative means the reverse. See the
reporting-vs-reality read of this same data
for how this compares against the Census's own population-change numbers.
2019→2020: 177,102 out, 105,743 in, net +71,359
2020→2021: 182,959 out, 99,020 in, net +83,939
2021→2022: 173,124 out, 105,574 in, net +67,550
2022→2023: 149,599 out, 110,645 in, net +38,954
Where Cook County, IL's Leavers Went, 2022→2023
Each number below is people who moved specifically from Cook County, IL to that one
county, in this one year -- not that county's own total gain from every source. Select it
in the picker above to see its own totals.
DuPage County (IL)19,059
Will County (IL)12,890
Lake County (IL)11,713
Lake County (IN)8,061
Kane County (IL)7,041
McHenry County (IL)4,112
Maricopa County (AZ)2,643
Los Angeles County (CA)2,538
New York County (NY)1,926
Harris County (TX)1,673
Where Cook County, IL's Arrivals Came From, 2022→2023
Each number below is people who moved specifically from that one county to Cook County, IL,
in this one year -- not that county's own total loss to everywhere else.
Oluwadi