Migration to and from Cook County, Illinois
Where Cook County residents came from and where they went over the 5-year window 2016-2020. Census ACS County-to-County Migration Flows, 2020 5-yr (frozen vintage).
Total inflow
186,543
people moved in (5-yr)
Total outflow
244,254
people moved out (5-yr)
Net migration
-57,711
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Asia | 16,901 | |
| DuPage County | Illinois | 13,206 |
| Europe | 7,663 | |
| Lake County | Illinois | 6,678 |
| Will County | Illinois | 6,454 |
| Kane County | Illinois | 4,555 |
| Lake County | Indiana | 3,835 |
| Central America | 3,432 | |
| Los Angeles County | California | 2,622 |
| Champaign County | Illinois | 2,395 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| DuPage County | Illinois | 21,050 |
| Will County | Illinois | 12,267 |
| Lake County | Illinois | 11,414 |
| Lake County | Indiana | 9,145 |
| Kane County | Illinois | 8,885 |
| Champaign County | Illinois | 5,935 |
| McHenry County | Illinois | 4,350 |
| Maricopa County | Arizona | 3,715 |
| Los Angeles County | California | 3,701 |
| King County | Washington | 2,485 |
Explore Cook County
- Business data for Cook CountyConstruction sector establishments, employment, payroll
- Cities in IllinoisACS demographic profiles for places statewide
- ZIP code lookupSearch demographic data by ZIP code
- Opportunity IndexRank counties by business growth potential
- Federal contracts in ILGovBids: RFPs, awards, NAICS matching
- New business filings in IllinoisNewFilings: fresh SOS registrations
Methodology
- Counts represent the number of people aged 1+ who reported a different residence at the survey reference date than they did one year earlier, aggregated across the 5-year sample window 2016-2020.
- Outbound (OUT) flows are reported less frequently than inbound (IN) because the survey captures the destination side of each move. Many county pairs have null OUT counts, which is normal.
- "Total inflow" sums the published MOVEDIN counts across all origin counties, including foreign-region inflows (Africa, Asia, Central America, etc.). It is not the same as net population change.
- Frozen vintage. The Census Bureau has not released a newer county-to-county migration flows file. The 2020 5-yr vintage (covering 2016-2020) is the latest available as of build date.
Source: U.S. Census Bureau, American Community Survey, County-to-County Migration Flows: 2016-2020. Vintage: 2020 5-yr. Generated: 2026-05-28. FIPS: 17031.