Modern invented name with no established etymological meaning.
Zailen is a contemporary American invention, likely created as a phonetic blend of popular sounds found in names like Jalen, Zayden, or Kai. It follows the modern trend of using the 'Z' initial and the '-len' suffix to create a unique, rhythmic identity. Because it is a recent creation, it lacks a traditional historical or linguistic root.
Less common today
Zailen isn't in the latest US Top 1000. It last peaked at #5,940 in 2011.
US births per 5-year period, 1990βpresent (SSA data).