Jonasia is of Hebrew origin, meaning "God is gracious." It is a unisex name, though it is more commonly used for females. The name gained popularity in the United States during the late 20th century and early 21st century, reaching its peak in popularity in 2004 when it was given to approximately 750 baby girls that year. It is often misspelled as Jonascia or Jonassie due to its unique spelling and pronunciation. The name Jonasia does not have any well-known historical figures associated with it, but it has been used by a few celebrities for their daughters.
"The name Jonasia experienced a significant spike in popularity between 2001 and 2006, with the highest number of births occurring in 2006. However, it seems to have fallen out of favor since then, as indicated by the lower birth counts in recent years."