Migration to and from Hamilton County, Iowa
Where Hamilton 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
686
people moved in (5-yr)
Total outflow
1,034
people moved out (5-yr)
Net migration
-348
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Asia | 132 | |
| Hardin County | Iowa | 63 |
| Polk County | Iowa | 61 |
| Webster County | Iowa | 50 |
| Black Hawk County | Iowa | 46 |
| Calhoun County | Iowa | 44 |
| Dallas County | Iowa | 28 |
| Humboldt County | Iowa | 26 |
| Tarrant County | Texas | 26 |
| Story County | Iowa | 22 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Plymouth County | Iowa | 174 |
| Story County | Iowa | 122 |
| Cerro Gordo County | Iowa | 95 |
| Wright County | Iowa | 81 |
| Polk County | Iowa | 73 |
| Blackford County | Indiana | 68 |
| Webster County | Iowa | 64 |
| Douglas County | Nebraska | 39 |
| Hardin County | Iowa | 37 |
| Linn County | Iowa | 33 |
Explore Hamilton County
- Business data for Hamilton CountyConstruction sector establishments, employment, payroll
- Cities in IowaACS demographic profiles for places statewide
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- Federal contracts in IAGovBids: 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: 19079.