Phinnaeus is a distinctive boys' name in United States, ranking #14093 in 2008 with 5 recorded births. This places Phinnaeus in the bottom 4% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 8 births ranking #9533. In 2008, approximately 1 in every 407,989 boys born was named Phinnaeus. STABLE Recent data shows the name is currently stable.