Tammy is a distinctive girls' name in United States, ranking #1415 in 2005 with 152 recorded births. The name reached its all-time peak in 1998 with 254 births ranking #841. Since 1996, the popularity has decreased by 32.4%. In 2005, approximately 1 in every 12,156 girls born was named Tammy. RISING Recent data shows the name is currently rising.