How to convert postal code to city name, is there an API available? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.

---

We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations.

Closed 4 years ago.

Improve this question 开发者_如何学编程

How to convert post code to city name, is there an API available?

---

Two years later, IMO the Google Maps Geocoding API is the best way to go.

Just pass in the postal code as the address parameter:

http://maps.googleapis.com/maps/api/geocode/json?address=94043&sensor=false

---

You need a service that does geocoding.

---

Yahoo's Geocoder API is getting much better results globally.

110021 is the postal code for New Delhi among several other places in the world.

This seems to get them all.

---

Google Maps API is another such service but I'm not happy with the geocoded results as I don't get all results back for 110021.

geocoder = new google.maps.Geocoder();
geocoder.geocode({ 'address': '110021'}, function(results, status) {
    console.log(results);
});

---

The US Post Office sells a subscription to map 5 digit zip codes to City/State values. As @Timothy says, the mapping is one to many. However, the post office db does mark which city/state is the "primary" for a given zip code.

Don't know about other countries. Check with your country's postal authority.

See http://www.usps.com/ncsc/addressinfo/citystate.htm

---

RedLine offers a free zipcode API service (up to 250 requests per hour). There are 4 different varieties covering distances between two zipcodes, zipcodes within a radius of a zipcode, City, state and Lat/long of a zipcode and the zipcode of a city. http://zipcodedistanceapi.redline13.com/

---

Just to put in my .02, using the Google Maps API mentioned above, you can look up global information. I am currently working on a project and am pretty much implementing it as my solution for this issue. Ok, off my tiny soap box.