Migration to and from Rock Island County, Illinois
Where Rock Island 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
7,323
people moved in (5-yr)
Total outflow
6,915
people moved out (5-yr)
Net migration
+408
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Scott County | Iowa | 1,338 |
| Cook County | Illinois | 674 |
| Henry County | Illinois | 320 |
| Mercer County | Illinois | 234 |
| Peoria County | Illinois | 222 |
| Asia | 203 | |
| Will County | Illinois | 133 |
| DuPage County | Illinois | 129 |
| Warren County | Illinois | 122 |
| Bureau County | Illinois | 111 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Scott County | Iowa | 905 |
| Cook County | Illinois | 404 |
| Henry County | Illinois | 304 |
| St. Clair County | Illinois | 265 |
| Sangamon County | Illinois | 243 |
| Johnson County | Iowa | 238 |
| Peoria County | Illinois | 171 |
| McLean County | Illinois | 153 |
| Lake County | Illinois | 149 |
| Linn County | Iowa | 148 |
Explore Rock Island 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: 17161.