Migration to and from Washington County, Illinois
Where Washington 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
732
people moved in (5-yr)
Total outflow
496
people moved out (5-yr)
Net migration
+236
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Marion County | Illinois | 112 |
| St. Clair County | Illinois | 105 |
| Clinton County | Illinois | 52 |
| Jefferson County | Illinois | 51 |
| Perry County | Illinois | 51 |
| Hampden County | Massachusetts | 41 |
| Holyoke City | Hampden County, Massachusetts | 41 |
| Franklin County | Illinois | 31 |
| Fayette County | Kentucky | 28 |
| Madison County | Illinois | 27 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| St. Clair County | Illinois | 100 |
| Clinton County | Illinois | 68 |
| Marion County | Illinois | 49 |
| St. Louis County | Missouri | 43 |
| Fayette County | Kentucky | 38 |
| Jefferson County | Illinois | 33 |
| Logan County | Ohio | 22 |
| Randolph County | Illinois | 19 |
| Cook County | Illinois | 16 |
| Will County | Illinois | 16 |
Explore Washington County
- Business data for Washington CountyConstruction sector establishments, employment, payroll
- Cities in IllinoisACS demographic profiles for places statewide
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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: 17189.