Tammy is a distinctive girls' name in United States, ranking #1494 in 2006 with 148 recorded births. The name reached its all-time peak in 1998 with 254 births ranking #841. Since 1996, the popularity has decreased by 34.2%. In 2006, approximately 1 in every 12,845 girls born was named Tammy. RISING Recent data shows the name is currently rising.