OSM tag name=Port Mahon matches Port Mahon in these Wikidata fields:
OSM tag name=Port Mahon matches Port Mahon, Delaware in these Wikidata fields:
OSM tag name=Port Mahon matches Port Mahon, DE in these Wikidata fields:
| Beaches of Delaware | natural=beach |
| Unincorporated communities in Delaware | landuse=residential, place |
| Unincorporated communities in Kent County, Delaware | landuse=residential, place |