Based on the 2010 Census of Population and Housing (CPH), the City of Isabela, a component city in Region IX whose province, Basilan, is under the jurisdication of ARMM, posted a total population of 97,857 persons as of May 1, 2010. This is larger by 24,825 persons compared to its total population of 73,032 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 2.97 percent. This is higher than the 2.07 percent annual PGR of the city between the census years 1990 and 2000.

Based on the 2010 Census of Population and Housing (CPH), Zamboanga City, a highly urbanized city in the province of Zamboanga del Sur, posted a total population of 807,129 persons as of May 1, 2010. This is larger by 205,335 persons compared to its total population of 601,794 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 2.98 percent. This is lower than the 3.12 percent annual PGR of the city between the census years 1990 and 2000.