If your profile meets the following criteria, you’ll now be able to claim a custom URL:
- Has a profile photo, and
- Has at least 10 followers, and
- Has an account that's at least 30 days old
Meanwhile, any brand or business that has a linked website or is a verified local business can claim a custom URL for their Google+ page. Link and verification info is available in the Google+ Help Center: http://goo.gl/RMpxP .
Once you meet the eligibility criteria, just visit your profile or page to begin the claiming process. If you don't see the option yet, don't worry: we're expanding availability throughout the week, and you'll see the in-product notice as soon as your custom URL is ready.
We hope that custom URLs will help you more easily promote your content on Google+, whether it be new photo collections, Hangouts On Air, or an interesting series of posts. For ideas on how to include custom URLs in your campaigns, ad creatives and more, visit our help center: https://support.google.com/plus/?p=claim_url
To get yout URL click this link for the step by step process : https://support.google.com/plus/answer/2716471