Getting zip-code + 4 from latitude/longitude

Question

Does anyone know the best way to use the iPhone location services (lat/long) to determine the zip code+4 of the user? Does MKReverseGeocoder have the ability to pull back zip+4?

Thanks!

-tony

Answer 1

我最喜欢进行与地理编码相关的工作的地方是geonames.org 。

Answer 2

You may be able to use a free Reverse Geocoding service to do this for you.

Google has such a service: http://code.google.com/apis/maps/documentation/services.html#ReverseGeocoding

Alternately, this Google Groups post has a listing of other Reverse Geocoding services: http://groups.google.com/group/Google-Maps-API/web/resources-non-google-geocoders?pli=1

Answer 3

Apple's documentation says that the MKPlacemark that MKReverseGeocoder only returns a five-digit zip code. You may have to use an outside reverse geocoder as described in the other answers to get the extra four digits.