You may use the
LocationCriterionService to retrieve the
CountryCode of your LocationCriterion. The
CanonicalName will return the Canonical Name depending on the Target Type (City or Postal Code) of the Criteria ID you used based on the Geo Targeting spreadsheet which you can find
here. The sample code can be found
here (other languages are also available in the link). However, Street Address is currently not supported.