What is New Castle County, Delaware?
'''New Castle County''' is a [[county]] in the state of [[Delaware]] in the [[United States]]. The county is in the north part of the state. The [[county seat]] is [[Wilmington, Delaware|Wilmington]]. New Castle County had 570,719 people in 2020.<ref>{{cite web|title=QuickFacts: New Castle County, Delaware|website=[[United States Census Bureau]]|url=https://www.census.gov/quickfacts/fact/table/newcastlecountydelaware/POP010220|access-date=July 28, 2023}}</ref> == References == {{reflist}} {{New Castle County, Delaware}} {{Delaware}} [[Category:New Castle County, Delaware| ]] [[Category:1637 establishments]] [[Category:1630s establishments in the Thirteen Colonies]] [[Category:17th-century establishments in Delaware]] {{US-geo-stub}}