Based on the 2010 Census of Population and Housing (CPH), the province of Quirino posted a total population of 176,786 persons as of May 1, 2010, larger by 28,211 persons compared to its total population of 148,575 persons counted in the 2000 CPH. The increase in the population count from 2000 to 2010 translated to an average annual population growth rate (PGR) of 1.75 percent, lower than the 2.67 percent annual PGR of the province between the census years 1990 and 2000.

If the average annual PGR recorded at 1.75 percent during the period 2000 to 2010 continues, the population of Quirino will double in 40 years.

Fifty years ago, the population of Quirino was only 24,266 persons. This population size is less than 15.0 percent of the population of the province in the 2010 CPH.

Based on the 2010 Census of Population and Housing (CPH), the province of Isabela posted a total population of 1,489,645 persons as of May 1, 2010. This is larger by 202,070 persons compared to its total population of 1,287,575 persons counted in the 2000 CPH. The increase in the population count from 2000 to 2010 translated to an average annual population growth rate (PGR) of 1.47 percent. This is lower than the 1.77 percent annual PGR of the province between the census years 1990 and 2000.

Based on the 2010 Census of Population and Housing (CPH), the province of Batanes posted a total population of 16,604 persons as of May 1, 2010. This is larger by 137 persons compared to its total population of 16,467 persons counted in the 2000 CPH. The increase in the population count from 2000 to 2010 translated to an average annual population growth rate (PGR) of 0.08 percent. This is lower than the 0.92 percent annual PGR of the province between the census years 1990 and 2000.

If the average annual PGR recorded at 0.08 percent during the period 2000 to 2010 continues, the population of Batanes would double in 845 years.