Migration to and from Rock County, Wisconsin
Where Rock 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
6,521
people moved in (5-yr)
Total outflow
6,307
people moved out (5-yr)
Net migration
+214
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Dane County | Wisconsin | 794 |
| Winnebago County | Illinois | 630 |
| Milwaukee County | Wisconsin | 347 |
| Waukesha County | Wisconsin | 238 |
| Hillsborough County | Florida | 228 |
| Walworth County | Wisconsin | 223 |
| Jefferson County | Wisconsin | 218 |
| Cook County | Illinois | 213 |
| Boone County | Illinois | 212 |
| Green County | Wisconsin | 192 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Dane County | Wisconsin | 1,194 |
| Walworth County | Wisconsin | 540 |
| Winnebago County | Illinois | 431 |
| Jefferson County | Wisconsin | 265 |
| Grant County | Wisconsin | 185 |
| Winnebago County | Wisconsin | 168 |
| Waukesha County | Wisconsin | 166 |
| Green County | Wisconsin | 153 |
| Adams County | Wisconsin | 111 |
| Milwaukee County | Wisconsin | 110 |
Explore Rock County
- Business data for Rock CountyConstruction sector establishments, employment, payroll
- Cities in WisconsinACS demographic profiles for places statewide
- ZIP code lookupSearch demographic data by ZIP code
- Opportunity IndexRank counties by business growth potential
- Federal contracts in WIGovBids: RFPs, awards, NAICS matching
- New business filings in WisconsinNewFilings: 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: 55105.