Catanduanes is a province in the Philippines situated in the Bicol Region occupying the southeastern peninsula of Luzon and the outlying island provinces of Masbate and Catanduanes. Its capital is the Municipality of Virac.

The province has a land area of 1,492.16 square kilometers or 576.13 square miles. Its population as determined by the 2020 Census was 271,879. This represented 4.47% of the total population of the Bicol Region, 0.44% of the overall population of the Luzon island group, or 0.25% of the entire population of the Philippines. Based on these figures, the population density is computed at 182 inhabitants per square kilometer or 472 inhabitants per square mile.

-https://www.philatlas.com/luzon/r05/catanduanes.html