Modern invented name, likely combining Jar- and -lyn
Jarelyn is a contemporary American invention. It likely follows the 20th-century trend of blending established name elements, specifically the prefix 'Jar-' (found in names like Jared or Jaron) with the popular feminine suffix '-lyn' (meaning lake).
Less common today
Jarelyn isn't in the latest US Top 1000. It last peaked at #11,916 in 2011.
US births per 5-year period, 1990βpresent (SSA data).