Abstract: Methods and systems for the storage and retrieval of originating caller location information in an emergency services system are disclosed. Subscriber information from a telephone service provider is received by a NG-911 service provider, the subscriber information including a subscriber telephone number and an associated subscriber address. The service provider generates geo-spatial coordinates corresponding to said subscriber address and stores the subscriber information and the corresponding geo-spatial data in a geographic information system (GIS) database, indexed at least according to said subscriber telephone number. In response to a query from a PSAP relating to an emergency service call originating from the subscriber telephone number, the NG-911 service provider queries the GIS database for the originating telephone number and returns the geo-spatial coordinates and the associated subscriber address.