Migration to and from Monroe County, Illinois
Where Monroe 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
1,494
people moved in (5-yr)
Total outflow
1,478
people moved out (5-yr)
Net migration
+16
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| St. Clair County | Illinois | 706 |
| Randolph County | Illinois | 149 |
| St. Louis City | Missouri | 111 |
| Bond County | Illinois | 97 |
| Mercer County | Illinois | 65 |
| St. Louis County | Missouri | 62 |
| Brevard County | Florida | 51 |
| Douglas County | Nebraska | 44 |
| Europe | 41 | |
| Cook County | Illinois | 38 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| St. Clair County | Illinois | 389 |
| Madison County | Illinois | 116 |
| St. Louis County | Missouri | 109 |
| Randolph County | Illinois | 107 |
| St. Louis City | Missouri | 80 |
| Rockwall County | Texas | 68 |
| Peoria County | Illinois | 61 |
| San Diego County | California | 59 |
| Greene County | Missouri | 50 |
| Cape Girardeau County | Missouri | 45 |
Explore Monroe County
- Business data for Monroe CountyConstruction sector establishments, employment, payroll
- Cities in IllinoisACS demographic profiles for places statewide
- ZIP code lookupSearch demographic data by ZIP code
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- Federal contracts in ILGovBids: RFPs, awards, NAICS matching
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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: 17133.