In 1715, several Spanish ships loaded with treasure (known as the1715 Treasure Fleet) encountered a storm off the shores of the Treasure Coast and were lost.[12] It is estimated that only a portion of the sunken treasure has been found. The value placed on the treasure lost from the 1715 fleet has been estimated at more than US$500 million. A significant portion of the treasure was discovered byMel Fisher, who established apermanent museum in Sebastian in 1992.[13][14]
The town of Sebastian was a fishing village as early as the 1870s. In the early 1880s David Peter Gibson and Thomas New settled in the area. New filed to start a post office under the nameNew Haven. However, New got into legal trouble for misuse of his position as postmaster and was removed. Officially, Sebastian was founded in 1882[12] and named St. Sebastian, afterSaint Sebastian.[15] Later, “St.” was removed from the name of the town, but not from the river. Sebastian was incorporated as a city in 1923.
As of the2020 United States census, there were 25,054 people, 10,684 households, and 6,691 families residing in the city.[22]
In 2020, 14.4% of the population were people under the age of 18, and 35.5% were people over the age of 65. The average household size was 2.39. 51.6% of the population were female and 48.4% male.[23]
The Government of the City of Sebastian follows acouncil-manager government model with a five-member city council as the elected governing body and a city manager as the chief operating officer. Members of the city council serve two-year terms with staggered elections.
Indian River County Fire-Rescue provides fire protection and emergency medical services to the citizens of Sebastian. There are two fire stations assigned to the city:
The Sebastian Police Department provides police protection for the city. It operates from the municipal complex, and has an authorized strength of approximately 48 sworn officers.[27][28]
There are three elementary schools (Sebastian Elementary,[29] Pelican Island Elementary[30] and Treasure Coast Elementary,[31]) two middle schools (Sebastian River Middle School[32] and Sebastian Charter Junior High) and one high school (Sebastian River High School) in the city.
Located to the west of the city center on County Road 512, the North County Public Library is part of the Indian River County Library System.