Migration to and from Middlesex County, Connecticut
Where Middlesex 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
10,291
people moved in (5-yr)
Total outflow
9,211
people moved out (5-yr)
Net migration
+1,080
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Hartford County | Connecticut | 2,797 |
| New Haven County | Connecticut | 2,124 |
| New London County | Connecticut | 798 |
| Asia | 399 | |
| Fairfield County | Connecticut | 324 |
| Windham County | Connecticut | 257 |
| Baltimore City | Maryland | 204 |
| Norfolk County | Massachusetts | 185 |
| Tolland County | Connecticut | 183 |
| Bayamón Municipio | Puerto Rico | 182 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| New Haven County | Connecticut | 1,948 |
| Hartford County | Connecticut | 1,899 |
| New London County | Connecticut | 582 |
| New York County | New York | 235 |
| Tolland County | Connecticut | 208 |
| Fairfield County | Connecticut | 178 |
| Middlesex County | Massachusetts | 162 |
| Horry County | South Carolina | 138 |
| District of Columbia | District of Columbia | 131 |
| Salt Lake County | Utah | 125 |
Explore Middlesex 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: 09007.