Market insights · Delaware
Sussex County, DE: growth, migration and housing
Sussex County has 277,140 residents, up 16.1% since 2020 (+2.2% in the last year). In 2022–2023, 8,366 households moved in and 5,317 moved out (+3,049 net), bringing in a net $517.2M of income. Median household income is $81,497, the median home $382,600 and median rent $1,238 a month.
In Delaware: 1st of 3 counties for 5-year population growth · 1st of 3 counties for net in-migration (per resident) · 2nd of 3 counties for median household income · 1st of 3 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Sussex County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Wicomico County, MD | 357 | $19.5M |
| Montgomery County, MD | 263 | $54.0M |
| Baltimore County, MD | 242 | $29.5M |
| Anne Arundel County, MD | 218 | $28.4M |
| Worcester County, MD | 209 | $16.0M |
| Chester County, PA | 174 | $24.3M |
| Montgomery County, PA | 135 | $25.6M |
| Delaware County, PA | 130 | $13.7M |
Where leavers went
Top counties by households leaving Sussex County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Wicomico County, MD | 360 | $15.3M |
| Worcester County, MD | 137 | $8.7M |
| Philadelphia County, PA | 92 | $6.0M |
| Baltimore County, MD | 85 | $8.0M |
| Anne Arundel County, MD | 79 | $8.7M |
| Montgomery County, MD | 78 | $9.1M |
| Chester County, PA | 71 | $6.6M |
| Caroline County, MD | 58 | $2.7M |
BizyFi in Sussex County
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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). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.