How many counties in Delaware? All 3 listed
Quick answer
Delaware has 3 counties and county equivalents holding 1,005,872 residents. The most populous county in Delaware is New Castle County with 573,030 residents; the smallest is Kent County. County boundaries divide the state's land area — measured in square miles by the Census Bureau — into the units used for property assessment, elections and local sales tax. The statewide sales tax base rate is 0% with no local add-ons.
All 3 counties
Ranked by population, Census 2019-2023 ACS 5-year estimates.
| County | Population | Median income | Median home value | Median rent |
|---|---|---|---|---|
| New Castle County | 573,030 | $89,901 | $329,800 | $1,379 |
| Sussex County | 247,799 | $78,162 | $353,300 | $1,221 |
| Kent County | 185,043 | $72,872 | $290,600 | $1,285 |
Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year
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