Get zip code from latitude, longitude?

Question

I want to get zip code from users current location(Latitude, Longitude), I had used MKReverse Geocoder delegate methods, but sometimes I am not able to get zip code informat

Answer 1

If you have a free db (available from that site? Just search for zip code database and you'll see it)

then you can run an internal SQL query testing for nearby lat/longs. That way you won't need to worry about licensing a web service.

You have three options then. SQL BETWEEN statement, the hypotenuse equation, or Haversine. Haversine being the best, luckily it's tutorial'd elsewhere