Cobalt is a distinctive boys' name in United States, ranking #12524 in 2019 with 5 recorded births. This places Cobalt in the bottom 11% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2014 with 7 births ranking #9835. In 2019, approximately 1 in every 358,672 boys born was named Cobalt. FALLING Recent data shows the name is currently falling.