10 of World's Most Populated Countries/Nations (UNFPA 2011)

World Population Day, which seeks to focus attention on the urgency and importance of population issues, was established by the Governing Council of the United Nations Development Programme in 1989. It was an outgrowth of the interest generated by the Day of Five Billion, which was observed on 11 July 1987. This year it marks the leadup to another milestone -- the World at 7 Billion.

Each year a number of UNFPA Country Offices and other organizations and institutions mark the day with a variety of activities to bring attention to population issues. UNFPA, which sponsors the observance, publishes posters and other advocacy materials for this purpose. 6,929,400,000 is the total approximation of world population as of July 7, 2011

Here's Top 10 lists of World's Most Populated Countries/Nations as of 2011.

1 - China

1,339,724,852 as of November 1, 2010

2 - India

1,210,193,422 as of March 1, 2011

3 - United States of America

311,705,000 as of July 7, 2011

4 - Indonesia

237,556,363 as of May 2010

5 - Brazil

190,732,694 as of August 1, 2010

6 - Pakistan

176,554,000 as of July 7, 2011

7 - Nigeria

176,554,000 as of 2010

8 - Bangladesh

150,863,000 as of July 7, 2011

9 - Russia

142,905,200 as of January 1, 2011

10 - Japan

127,950,000 as of June 1, 2011

• Reference/Source: Wikipedia.org
• Reference/Source: UNFPA
About
UNFPA

The United Nations Population Fund (UNFPA) in a UN organisation. The work of the UNFPA involves improving demographic statistics and assisting with poulation censuses and major national surveys; improving reproductive health, including national strategies, protocols, providing supplies and services, reproductive health, which expands out into areas such as prevention of sexually transmitted diseases, including HIV/AIDS; and addressing issues concerning the rights of particular population groups, principally women, adolescents and youth, and as relevant, also national minorities, internal migrants, the elderly and the handicapped. It is known recently for its worldwide campaign against obstetric fistula and female genital cutting. The UNFPA supports programs in more than 150 countries, territories and areas spread across four geographic regions: Arab States and Europe, Asia and the Pacific, Latin America and the Caribbean, and sub-Saharan Africa. Around three quarters of the staff work in the field. It is a member of the United Nations Development Group and part of its Executive Committee.