According to the National Statistics Office (NSO) 2010 Census of Population and Housing, as of year 2010, the most populated province in the Philippines is Cavite with 3.09 million people.
The second province with the largest population is Bulacan with 2.92 million.
The third is Pangasinan with 2.78 million people.
This data has been publish in the NSO website in April 2012. So far, this is the latest information regarding the most populated province in the Philippines.