Jemma is a moderately popular girls' name in England & Wales, ranking #158 in 1999 with 282 recorded births. The name reached its all-time peak in 1996 with 480 births ranking #101. Since 1996, the popularity has decreased by 41.3%. In 1999, approximately 1 in every 999 girls born was named Jemma. FALLING Recent data shows the name is currently falling.