Williamson is a distinctive boys' name in United States, ranking #11413 in 2005 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 2005, approximately 1 in every 332,858 boys born was named Williamson. RISING Recent data shows the name is currently rising.