The area of Velkua originally belonged to the Taivassalo church play. In 1793, the wooden church of Velkua dedicated to St. Henry was completed and Velkua received the status of a chapel congregation. In the Third Russo-Swedish War, a naval battle took place off Velkua in 1808. Russian troops landed on Velkua and plundered the church. In the course of the separation of the administration of the rural communities from the church administration, the political community Velkua was created in 1863. At the beginning of 2009, Velkua was incorporated into the mainland town of Naantali together with Rymättylä and Merimasku.