Tammy is a distinctive girls' name in United States, ranking #841 in 1998 with 254 recorded births. This places Tammy in the top 5% of ranked US girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 1998 with 254 births ranking #841. Since 1996, the popularity has increased by 12.9%. In 1998, approximately 1 in every 6,956 girls born was named Tammy. RISING Recent data shows the name is currently rising.