Tammy is a moderately popular girls' name in England & Wales, ranking #418 in 1997 with 73 recorded births. The name reached its all-time peak in 1996 with 92 births ranking #364. Since 1996, the popularity has decreased by 20.7%. In 1997, approximately 1 in every 4,016 girls born was named Tammy. FALLING Recent data shows the name is currently falling.