Total Population in Delaware, by County
Total Population for every county in Delaware, ranked. The highest is New Castle County at 577,961 and the lowest is Kent County at 187,604.
See Total Population on the interactive map →
| # | County | Total Population |
|---|---|---|
| 1 | New Castle County | 577,961 |
| 2 | Sussex County | 255,626 |
| 3 | Kent County | 187,604 |
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