Williamson is a distinctive boys' name in United States, ranking #11293 in 2004 with 6 recorded births. The name reached its all-time peak in 2025 with 9 births ranking #8873. Since 1996, the popularity has increased by 20.0%. In 2004, approximately 1 in every 330,800 boys born was named Williamson. RISING Recent data shows the name is currently rising.