Janesville-Beloit migration, mapped
In 2022–23, 5,732 people moved into the Janesville metro and 5,477 moved out, a net of +255. 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: Madison, WI leads both directions, with 1,488 people in and 1,117 out in 2022–23. The listed corridors cover about 59–66% of all flows; the totals count everyone.
- Trend: net inflow has strengthened over the last three years, from +37 in 2020–21 to +255 in 2022–23†.
Population · 2025
166,472
▲ 0.5% year over year · growing
Peak population
166,472
highest in the series shown (since 2000)
Why the population is changing
- Growth driver: domestic migration added more people than anything else: +764 in 2025, ahead of births minus deaths (+72) and international migration (−33).
- Peak population: the 2025 estimate of 166,472 is the highest on record, in data going back to 2000.
Net income flow · 2022–23
−$3M
▼ $204M arrived · $207M left
Avg household income · movers
$57k in · $59k out
similar incomes both directions
Janesville wealth migration
- Money moved: households moving into the Janesville metro in 2022–23 reported $204M in income (AGI). Households leaving took $207M with them, a net loss of $3M.
- Income gap: the average household moving in reported $57k of income, vs $59k 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 59% 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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