MDPAfter the 2020 Census, there are three key changes to the Census Bureau's urban area concept and criteria: We increased the minimum population threshold to qualify as urban from 2,500 to 5,000, and we added an alternative: instead of qualifying based on population size, areas can now qualify based on a minimum housing unit threshold. We now use housing unit density instead of population density. We no longer distinguish between different types of urban areas. The first two changes reflect a general shift by the Census Bureau toward using housing units to measure urbanization and identify qualifying urban areas. Each of these criteria changes is described more below (see this link from the Census Bureau ). This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov . Feature Service Link: https://mdgeodata.md.gov/imap/rest/services/Demographics/MD_CensusDesignatedAreas/FeatureServer/0ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/57404c9628354fc2a9020b1891145b58_0engMaryland iMapPublicMaryland Census Designated Areas - Urban Areas 2020 [Maryland]Web servicesMaryland2020