Decatur migration, mapped
In 2022–23, 2,935 people moved into the Decatur metro and 3,417 moved out, a net of −482. 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: Rest of Illinois leads both directions, with 474 people in and 470 out in 2022–23. The listed corridors cover about 39–40% of all flows; the totals count everyone.
- Trend: net outflow has eased over the last three years, from −980 in 2020–21 to −482 in 2022–23†.
Population · 2025
99,300
▼ 0.6% year over year · shrinking
Peak population · 2000
114,499
13.3% below the 2000 peak
Why the population is changing
- Growth driver: domestic outflow led the population decline in 2025: −462, against births minus deaths (−334) and international migration (+143).
- Peak population: the high-water mark was 114,499 in 2000. The 2025 estimate of 99,300 is 13.3% below that.
Net income flow · 2022–23
−$52M
▼ $92M arrived · $144M left
Avg household income · movers
$54k in · $73k out
leavers out-earn arrivals by 35%
Decatur wealth migration
- Money moved: households moving into the Decatur metro in 2022–23 reported $92M in income (AGI). Households leaving took $144M with them, a net loss of $52M.
- Income gap: the average household moving in reported $54k of income, vs $73k for leavers. Leavers out-earn arrivals by 35%.
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 39% of inbound and 40% 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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