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In all the world, Decia (Decia ) is quite a rare largely female, but infrequently boy's given name. The given name Decia is habitual in the Democratic Republic of the Congo, where it is a rare epicene name, Portugal, where it is a rare female name, and the Dominican Republic. Measured by absolute frequency, this name is the most popular in the Democratic Republic of the Congo, Brazil, and the United States. Very seldom, Decia is the last name as well as the forename.