Sidonia is a distinctive girls' name in United States, ranking #17315 in 2007 with 6 recorded births. The name reached its all-time peak in 2000 with 8 births ranking #11641. Since 1996, the popularity has increased by 20.0%. In 2007, approximately 1 in every 320,408 girls born was named Sidonia. FALLING Recent data shows the name is currently falling.