Opened [Trac Ticket # 3838](http://trac.openstreetmap.org/ticket/3838) about this. Please vote follow if you have the same issue. It would seem that Nominatim has no support for zip+4 codes in US addresses. While its understandable that it cannot return a zip+4 zip code, adding a zip+4 to an address will cause the geocoder to not match an address that it would otherwise match. * [19 Elizabeth Street, New York, NY, 10013-4803](http://nominatim.openstreetmap.org/search?q=19%20Elizabeth%20Street%2C%20New%20York%2C%20NY%2C%2010013-4803&format=xml&polygon=1&addressdetails=1&limit=50) * [19 Elizabeth Street, New York, NY, 10013](http://nominatim.openstreetmap.org/search?q=19%20Elizabeth%20Street%2C%20New%20York%2C%20NY%2C%2010013&format=xml&polygon=1&addressdetails=1&limit=50)

It would seem that Nominatim has no support for zip+4 codes in US addresses. While its understandable that it cannot return a zip+4 zip code, adding a zip+4 to an address will cause the geocoder to not match an address that it would otherwise match. * [19 Elizabeth Street, New York, NY, 10013-4803](http://nominatim.openstreetmap.org/search?q=19%20Elizabeth%20Street%2C%20New%20York%2C%20NY%2C%2010013-4803&format=xml&polygon=1&addressdetails=1&limit=50) * [19 Elizabeth Street, New York, NY, 10013](http://nominatim.openstreetmap.org/search?q=19%20Elizabeth%20Street%2C%20New%20York%2C%20NY%2C%2010013&format=xml&polygon=1&addressdetails=1&limit=50)