What is the richest county in Delaware?
New Castle County is the richest county in Delaware by median household income at $89,901, per Census ACS 5-Year estimates.
Context
Wealthy counties tend to cluster around major employment hubs, university towns, and resort communities. They typically combine high educational attainment, knowledge-economy jobs, and constrained housing supply that filters for affluent residents.
Top 10
| New Castle County | $89,901 |
| Sussex County | $78,162 |
| Kent County | $72,872 |
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Frequently Asked Questions
New Castle County is the richest county in Delaware by median household income at $89,901, per Census ACS 5-Year estimates.