Hi,

today I tried to look up an address on openstreetmap.org. It was "35516 galen place, fremont". I got a result from Nominatim in the right spot on the map (confirmed by Google Maps). I was then very surprised to not find the address in the OSM data. Only the residential "Galen Place" is mapped, no individual houses let alone addresses though, nor any interpolation.

After some discussion on the German forum (https://forum.openstreetmap.org/viewtopic.php?pid=690815) it was speculated that Nominatim draws from TIGER database (|SELECT place_id||FROM location_property_tiger |in the debug output).

Could someone enlighten me how and in which locations Nominatim uses additional data to OSM? What is the priority?

Thanks,

Tobi

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