Based on the 2020 census, the BARMM region registered the highest share of households who reported Islam as their religious affiliation, at 90.9 percent. This was followed by Region 9 or Zamboanga Peninsula with a share of 18.2 percent.
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Based on the 2020 census, the BARMM region registered the highest share of households who reported Islam as their religious affiliation, at 90.9 percent. This was followed by Region 9 or Zamboanga Peninsula with a share of 18.2 percent.