Indians wealth is $5.6 trillion, almost 3 times the GDP

Wealth of major Indian cities.

Mumbai - $800 billion
Delhi - $500 billion

Bangalore, Hyderabad (my erstwhile capital city), Kolkatta - $300 billion each

Pune - $200 billion

Chennai (my current city) - $150 billion

Gurugram - $100 billion

India is home to about 250,000 millionaire and 100 billionaire.

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Other emerging cities in the country include, Surat, Ahmadabad, Visakhapatnam, Goa, Chandigarh, Jaipur, and Vadodara, the report said.

It noted that over the next decade, India is expected to benefit from strong growth in local financial services, IT, real estate, healthcare and media sectors.

"In particular, the local hospital services and health insurance sectors are expected to grow strongly. Hyderabad, Pune and Bengaluru are expected to lead the pack in terms of wealth growth," it said.

Millionaires or high networth individuals (HNIs) refer to individuals with net assets of $1 million or more.

Billionaires refer to individuals with net assets of $1 billion or more.

Other wealthiest cities include, 

Hyderabad (total wealth of $310 billion, has 8,200 millionaires, 7 billionaires); (My comment: So, just 8,000 people out of 70 lakhs population are millionaires in Hyderabad. Sounds low to me, considering the many luxury and ultra-luxury apartments and cars in Hyderabad.)

Kolkata ($290 billion, has 8,600 millionaires and 10 billionaires); 

Pune ($180 billion, has 3,900 millionaires and 5 billionaires); 

Chennai ($150 billion and has 6,200 millionaires and 4 billionaires) and 

Gurgaon ($110 billion and home to 3,600 millionaires and 2 billionaires).

http://www.bloombergquint.com/business/2016/09/28/mumbai-wealthiest-indian-city-with-total-wealth-of-dollar820-billion