You will be able to access http://www.findmyciti.com/in/ (a third party website) on clicking "Locate ATM". Third party websites are not owned or controlled by Citigroup who bears no responsibility for them.
Click on Locate ATM
Select ATM on the check box on the top
Enter the name of a city and click on Search
Place the arrow/cursor on the required Location
The complete address of the Citibank ATM will be displayed