Where to place API key for Google Geocoding API?

+11 votes
asked Aug 23, 2013 by win

We use Google Geocoding API to map address to Latitude and Longitude.

Here is the sample URL for encoding (which returns json) -



Ok, it makes sense, because we exceed over 2500 daily limit so we place API key like this -



I'm wondering where/how to place the API Key.

1 Answer

+13 votes
answered Nov 29, 2018 by matthew

Looks like in version 3 you need to pass the ClientID in the URL and not a key as you do in the free version: https://developers.google.com/maps/articles/v2tov3#newkey

So your URL should look like: http://maps.googleapis.com/maps/api/geocode/json?client=xxxxx&address=Dallas&sensor=false

Not lucky enough to have a paid account so I cannot test - but I think that will get you on the correct path.

Relevant from this link: https://developers.google.com/maps/documentation/business/webservices/

Client ID

You must include your client ID in all API requests. Your client ID identifies you as a Maps API for Business customer and enables support and purchased quota for your application. Requests made without a client ID are not eligible for Maps API for Business benefits.

If you're switching from the free API services to a Maps API for Business implementation, you must remove the key parameter from your requests. Google Maps API web services will deny requests made with both a client ID and a key.

More information is available in the Authentication and Authorization chapter of this guide.

If you have lost your client ID, you can recover it by logging in to the support portal and clicking Maps: Add URLs from the links on the left of the page.


For more information, including instructions on passing your client ID to the Earth API, v2 API, and the Maps API for Flash, please read Loading Client-side APIs.

If you have lost your client ID or cryptographic key, you can recover them by logging in to the support portal and clicking Maps: Add URLs from the links on the left of the page.

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