OSM tag name=Mill Rock matches Mill Rock in these Wikidata fields:
OSM tag name=Mill Rock matches Mill Rock Island in these Wikidata fields:
| Islands of Manhattan | place=islet, place=island, boundary=administrative, admin_level |
| Islands of the East River | place=islet, place=island, boundary=administrative, admin_level |
| Parks in Manhattan | leisure=park, landuse=recreation_ground, leisure=common, boundary=national_park |
| Uninhabited islands of New York (state) | place=islet, place=island, boundary=administrative, admin_level |