Amherst Town-Northampton migration, mapped
In 2022–23, 6,156 people moved into the Amherst Town metro and 6,599 moved out, a net of −443. 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: Springfield, MA leads both directions, with 1,616 people in and 1,878 out in 2022–23. The listed corridors cover about 66–68% of all flows; the totals count everyone.
- Trend: net outflow has deepened over the last three years, from −306 in 2020–21 to −443 in 2022–23†.
Population · 2025
164,065
▼ 0.4% year over year · shrinking
Peak population · 2021
165,218
0.7% below the 2021 peak
Why the population is changing
- Growth driver: domestic outflow led the population decline in 2025: −698, against births minus deaths (−491) and international migration (+574).
- Peak population: the high-water mark was 165,218 in 2021. The 2025 estimate of 164,065 is 0.7% below that.
Net income flow · 2022–23
−$28M
▼ $291M arrived · $319M left
Avg household income · movers
$68k in · $68k out
similar incomes both directions
Amherst Town wealth migration
- Money moved: households moving into the Amherst Town metro in 2022–23 reported $291M in income (AGI). Households leaving took $319M with them, a net loss of $28M.
- Income gap: the average household moving in reported $68k of income, vs $68k 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 66% of inbound and 68% 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 2000. 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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