Tammy is a distinctive girls' name in United States, ranking #1768 in 2007 with 122 recorded births. The name reached its all-time peak in 1998 with 254 births ranking #841. Since 1996, the popularity has decreased by 45.8%. In 2007, approximately 1 in every 15,758 girls born was named Tammy. RISING Recent data shows the name is currently rising.