Dennison is a distinctive boys' name in United States, ranking #10109 in 2024 with 7 recorded births. The name reached its all-time peak in 2000 with 17 births ranking #4440. Since 1996, the popularity has increased by 40.0%. In 2024, approximately 1 in every 245,045 boys born was named Dennison. RISING Recent data shows the name is currently rising.