Getting Geocode information in salesforce is made easy using clean rules in Data.com service.
By default, Salesforce provides clean rules for Account, Contact and Lead object.
Let's see how we can make use of this feature.
Activate clean rule
The first thing we want to do is activate clean rule for the respective object. In our case, we will activate for the Account object.
Go Setup --> Data.com Administration --> Clean --> Clean Rules.