Cover the Planet With People

Train in India

As of December 2011, the world's most populous nation was China, with a population of 1,347,350,000. The second most populous nation was India, with a population of 1,210,193,422. The US Census Bureau estimated that India's population would overtake China's in 2025.
   More about population:

• As of July 2012, the Pitcairn Islands, a territory of the United Kingdom, had just 48 residents.
• As of September 2012, the United States had a population of about 314,289,000, making it the third most populous nation.
• Singapore's land area is 271.8 square miles (704 km²), and it had a population of 5,183,700 as of 2011, making it the world's most population-dense country. 
  ~ from www.wisegeek.com