Norwich-New London-Willimantic migration, mapped
In 2022–23, 11,519 people moved into the Norwich metro and 10,933 moved out, a net of +586. Yellow arcs are people arriving, blue arcs are people leaving. Hover a dot to see the corridor, or click through to compare.
The map couldn’t load. The numbers below still tell the story.
† IRS methodology change in this year’s files (see methodology)
What the flows say
- Biggest published corridors: Hartford, CT leads both directions, with 2,090 people in and 1,880 out in 2022–23. The listed corridors cover about 60–64% of all flows; the totals count everyone.
Population · 2025
284,015
▲ 0.3% year over year · growing
Peak population
284,015
highest in the series shown (since 2020)
Why the population is changing
- Growth driver: growth is led by international migration (+642); domestic migration added +358 in 2025.
- Peak population: the 2025 estimate of 284,015 is the highest on record, in data going back to 2020.
Net income flow · 2022–23
+$4M
▲ $491M arrived · $486M left
Avg household income · movers
$67k in · $70k out
similar incomes both directions
Norwich wealth migration
- Money moved: households moving into the Norwich metro in 2022–23 reported $491M in income (AGI). Households leaving took $486M with them, a net gain of $4M.
- Income gap: the average household moving in reported $67k of income, vs $70k for leavers. Arriving and leaving households report similar incomes.
About the data
Corridors are IRS county-to-county migration flows added up into metro areas (2023 Census metro definitions; exemptions ≈ people). "Rest of" entries cover a state's counties outside any featured metro. The IRS hides corridors with fewer than 20 returns, so the lists here cover about 64% of inbound and 60% of outbound movers in 2022–23. The in, out, and net totals count everyone. Income figures are the total income (AGI) movers reported, from the complete county totals. Dollars are not adjusted for inflation, and household averages divide by the number of returns. Population figures are Census Bureau estimates; the peak covers records since 2020. Years marked † had a change in how the IRS built the files. Full details on the methodology page.
Download this data (CSV), free to use with attribution.
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