King CountyFor more information about this layer please see the GIS Data Catalog . The 48 Health Reporting Areas (HRAs) are aggregates of Census 2010 blocks created to facilitate the analysis and presentation of sub-county health statistics. Where possible, HRAs are defined as neighborhoods within large cities, smaller cities, unincorporated areas in King County, or a combination of these geographies, with a Census 2010 population over 30,000.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/d55fa9f5af6e40f4a9949e0c1df96cc4_0engKing County GIS Open DataPublicHealth Reporting Areas 2010 [Washington (State)--King County]Web servicesWashington (State)--King CountyWashington (State)2010