Phineas is a distinctive boys' name in United States, ranking #3204 in 2001 with 28 recorded births. The name reached its all-time peak in 2016 with 142 births ranking #1284. Since 1996, the popularity has increased by 250.0%. In 2001, approximately 1 in every 69,387 boys born was named Phineas. STABLE Recent data shows the name is currently stable.