Richest & Poorest Counties in Delaware
Delaware has 3 counties. The wealthiest county by median household income is New Castle County at $91,166 , while the lowest-income county is Kent County at $74,477 . The statewide median household income is $84,954, compared to the national median of $75,149.
The income gap between the wealthiest and poorest county in Delaware is $16,689. 2 of 3 counties (67%) have a median household income above the national median of $75,149, while 1 (33%) fall below it.
Delaware's statewide median of $84,954 is 13.0% above the national median. Income data is sourced from the U.S. Census Bureau's American Community Survey (2024 5-Year Estimates) and reflects pre-tax household income including wages, investments, and government transfers.
Geography
Metric
Delaware — Median Household Income by County
Source: U.S. Census Bureau — ACS 5-Year Estimates. All values are estimates subject to margin of error.
Richest Counties in Delaware
Top 10 counties ranked by median household income.
| # | County | Income |
|---|---|---|
| 1 | New Castle County | $91,166 +21.3% |
| 2 | Sussex County | $81,497 +8.4% |
| 3 | Kent County | $74,477 -0.9% |
Poorest Counties in Delaware
Bottom 10 counties ranked by median household income.
| # | County | Income |
|---|---|---|
| 3 | Kent County | $74,477 -0.9% |
| 2 | Sussex County | $81,497 +8.4% |
| 1 | New Castle County | $91,166 +21.3% |
All 3 Counties Ranked
Every county in Delaware ranked by median household income. Click any county for its full profile.
| # | County | Income |
|---|---|---|
| 1 | New Castle County | $91,166 +21.3% |
| 2 | Sussex County | $81,497 +8.4% |
| 3 | Kent County | $74,477 -0.9% |
About This Data
All figures are estimates from the American Community Survey 2024 5-Year Estimates, published by the U.S. Census Bureau. Values are subject to sampling variability and margin of error.
Rankings are within Delaware only and may differ from national rankings. For more information, see our methodology.