New Delhi the capital city of India has approximately 10.2 million residents.

Additional information:
www.delhiinfo.com
www.travel-delhi.com
www.delhimarket.com

The other main cities, and their populations, in descending order are:
Mumbai (Bombay)approximately 12,400,000
www.mumbainet.com
www.mumbaibombay.net

Kolkata (Calcutta)approximately4,800,000
www.calcuttaweb.com
www.calonline.com

Bangalore approximately4,500,000 (Bangalore is considered India's Silicone Valley)

Chennai (Madras) approximately4,400,000

Ahmedabad approximately3,700,000

Hyderabad approximately3,600,000

Kanpur approximately2,600,000