Clifford is a distinctive boys' name in United States, ranking #731 in 2001 with 238 recorded births. The name reached its all-time peak in 1996 with 356 births ranking #538. Since 1996, the popularity has decreased by 33.1%. In 2001, approximately 1 in every 8,163 boys born was named Clifford. RISING Recent data shows the name is currently rising.