Delaware migration, mapped
In 2022–23, 35,759 people moved into Delaware and 27,956 moved out, a net of +7,803. Drag the year slider to watch the trend, hover any state to see the corridor, or click through to explore it.
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† IRS methodology change in this year’s files (see methodology)
What the flows say
- Biggest corridors: Pennsylvania leads both directions, with 9,859 people in and 6,237 out in 2022–23.
- Trend: net inflow has cooled over the last three years, from +10,638 in 2020–21 to +7,803 in 2022–23†.
Population · 2025
1,059,952
▲ 0.9% year over year · growing
Peak population
1,059,952
highest in the series shown (since 1910)
Why the population is changing
- Growth driver: domestic migration added more people than anything else: +6,855 in 2025, ahead of births minus deaths (−554) and international migration (+3,473).
- Peak population: the 2025 estimate of 1,059,952 is the highest on record, in data going back to 1910.
Net income flow · 2022–23
+$564M
▲ $1.9B arrived · $1.3B left
Avg household income · movers
$88k in · $77k out
arrivals out-earn leavers by 14%
Delaware wealth migration
- Money moved: households moving into Delaware in 2022–23 reported $1.9B in income (AGI). Households leaving took $1.3B with them, a net gain of $564M.
- Income gap: the average household moving in reported $88k of income, vs $77k for leavers. Arrivals out-earn leavers by 14%.
Drill into a metro
IRS data goes deeper than states. Pick a metro to see its own corridors.
About the data
Migration figures come from the official IRS state-to-state files (exemptions ≈ people). Population figures are Census Bureau estimates, and the peak checks every census back to 1910. Income figures are the total income (AGI) movers reported in the same IRS files. Dollars are not adjusted for inflation, and household averages divide by the number of returns. Years marked † had a change in how the IRS built the files. Full details, caveats, and a suggested citation on the methodology page.
Download this data (CSV), free to use with attribution.
Every year, thousands of people move to Delaware
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