Unknown; likely a modern American creation
Lastacia is a rare modern name with no established etymological history. It is likely a creative blend or an elaboration of names like Stacia or Latasha, possibly influenced by the Greek name Anastasia. Because it lacks a traditional root, its meaning is generally defined by the families who choose it.
Less common today
Lastacia isn't in the latest US Top 1000. It last peaked at #8,883 in 1990.
US births per 5-year period, 1990βpresent (SSA data).