Kelvin is a moderately popular boys' name in United States, ranking #393 in 1997 with 598 recorded births. This places Kelvin in the top 4% of ranked US boys' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 1998 with 698 births ranking #367. Since 1996, the popularity has decreased by 11.7%. In 1997, approximately 1 in every 3,152 boys born was named Kelvin. STABLE Recent data shows the name is currently stable.