Joylin is of American origin, derived from the combination of 'Joy' and '-lin', a suffix found in names like Lindsay and Lauren. It means 'happy' or 'rejoicing'. The name gained popularity in the United States during the late 20th century but remains relatively uncommon compared to other names.
"Joylin was a popular baby girl name from the late '90s to the mid-2010s, with peaks in popularity around the years 2001 and 2010-2011."