Tammy is a distinctive girls' name in United States, ranking #1307 in 2004 with 164 recorded births. The name reached its all-time peak in 1998 with 254 births ranking #841. Since 1996, the popularity has decreased by 27.1%. In 2004, approximately 1 in every 11,196 girls born was named Tammy. RISING Recent data shows the name is currently rising.