Unknown; possibly a modern variation of Deja
Dejia is a modern American name likely created as a phonetic variation of the French word 'déjà', meaning 'already'. It may also be used as a creative blend of the prefix 'De-' with the name 'Jia'. Due to its recent emergence, it lacks a singular historical etymology.
Fewer than 5 girls were named Dejia in 2025.
US births per 5-year period, 1990–present (SSA data).