Infrastructure Access Areas (2021)
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资源简介：
The Infrastructure Access Area data set is a composite data set that consists of Water Service Areas, Water Districts, and Urban Service Areas (USAs). Census designated Urbanized Areas and Urban Clusters were used as a proxy for infrastructure access in areas without adequate infrastructure data available. The Census Bureau identifies two types of urban areas: Urbanized Areas (UAs) of 50,000 or more people; Urban Clusters (UCs) of at least 2,500 and less than 50,000 people.
创建时间：
2021-03-10
