Phineas is a distinctive boys' name in United States, ranking #1393 in 2011 with 120 recorded births. The name reached its all-time peak in 2016 with 142 births ranking #1284. Since 1996, the popularity has increased by 1,400.0%. In 2011, approximately 1 in every 15,825 boys born was named Phineas. STABLE Recent data shows the name is currently stable.