Migration to and from Warren County, Illinois
Where Warren 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
1,425
people moved in (5-yr)
Total outflow
946
people moved out (5-yr)
Net migration
+479
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Knox County | Illinois | 252 |
| Mercer County | Illinois | 100 |
| Morgan County | Illinois | 91 |
| Peoria County | Illinois | 66 |
| Wake County | North Carolina | 61 |
| Scott County | Iowa | 50 |
| Cook County | Illinois | 44 |
| Winneshiek County | Iowa | 38 |
| Knox County | Missouri | 33 |
| Trempealeau County | Wisconsin | 33 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Patillas Municipio | Puerto Rico | 161 |
| Knox County | Illinois | 144 |
| Rock Island County | Illinois | 122 |
| Tulare County | California | 86 |
| Mercer County | Illinois | 78 |
| McDonough County | Illinois | 68 |
| Madison County | Illinois | 63 |
| Fulton County | Illinois | 20 |
| Nueces County | Texas | 20 |
| Franklin County | Washington | 18 |
Explore Warren County
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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: 17187.