Aadhaar Online Registration
People can apply for Aadhar card only by visiting the enrollment centre near to their location. UIDAI doesn’t have any system to register for UID number appointment online just like we’ve in our passport application system.
You need to go any authorized Aadhaar enrollment center anywhere in India with your identity and address proof.
Here’s the list of Aadhaar Enrollment Centers: http://appointments.uidai.gov.in/easearch.aspx