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Urban Area - National Geographic Society
List of United States urban areas - Wikipedia
Urban area - Wikipedia
Durham, NC Urban Area - Profile data - Census Reporter
List of metropolitan areas of North Carolina - Wikipedia
Urban Habitats | National Geographic
Urbanization - Our World in Data
Durham | Historic City, Research Triangle & Duke University
Making Sense of the New "Urban Area" Definitions | NC OSBM
Making Sense of the New “Urban Area” Definitions