Market insights · DE
Delaware: where people are moving, county by county
Delaware has 1,059,952 residents across 3 counties, up 6.9% in five years. Net movement with other states in 2022–2023: +4,054 tax returns and +$564.1M in income. Strongest net in-migration: Sussex County, Kent County, New Castle County.
All 3 counties
Largest first. Growth is the five-year change in Census population estimates; net movement is IRS tax returns (roughly households) moving in minus out, per 1,000 residents, 2022–2023. BizyFi calculations from those totals. Income, home value and rent: Census ACS 5-year 2024.
| County | Population | 5-yr growth | Net per 1,000 | Net income in | Median income | Median home | Median rent | |
|---|---|---|---|---|---|---|---|---|
| New Castle County | 588,026 | +3.0% | +0.4 | -$0.9M | $91,166 | $352,200 | $1,448 | Map |
| Sussex County | 277,140 | +16.1% | +11.0 | +$517.2M | $81,497 | $382,600 | $1,238 | Map |
| Kent County | 194,786 | +6.8% | +4.0 | +$47.7M | $74,477 | $316,600 | $1,354 | Map |
Growing in Delaware?
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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Growth, per-1,000 and state totals are BizyFi calculations; the IRS suppresses very small flows, shown as –. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.