Delaware County Maps

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New Castle County, Delaware

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New Castle County, Delaware Map

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An detailed map of New Castle County. Click on a nearby County to view more information about that County.

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Map of Counties in Delaware

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An interactive map of Counties in Delaware. Click on a County to view more information about that County.

About New Castle County, Delaware

New Castle County is the northernmost of the three counties of the U.S. state of Delaware. As of the 2020 census, the population was 570,719, making it the most populous county in Delaware, with nearly 60% of the state's population of 989,948. The county seat is Wilmington, which is also the state's most populous city.

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This site has an interactive map of Delaware Counties. Click on the map to find your Delaware county, and view more details. You can also search for your address and use your GPS to find your Delaware County.

Find what County you are in, and see official Delaware County resources and information. Find any county in the United Stated, along with resources and links to official County websites. See a County map and local details. Looking for what county you are currently in? Find out on this map or use your device GPS to see what county you are in.