Clifford is a distinctive boys' name in United States, ranking #654 in 1998 with 267 recorded births. The name reached its all-time peak in 1996 with 356 births ranking #538. Since 1996, the popularity has decreased by 25.0%. In 1998, approximately 1 in every 7,158 boys born was named Clifford. RISING Recent data shows the name is currently rising.