1715Disaster
== History ==
In 1715, several Spanish ships loaded with treasure (known as the 1715 Treasure Fleet) encountered a storm off the shores of the Treasure Coast and were lost.
1882Government
Officially, Sebastian was founded in 1882 and named St.
1903History
Nearby Pelican Island was declared the first National Wildlife Refuge in the United States in 1903.
1923Government
Sebastian was incorporated as a city in 1923.
1992Government
A significant portion of the treasure was discovered by Mel Fisher, who established a permanent museum in Sebastian in 1992.
2009Sports
== Notable people ==
Bryan Augenstein, pitcher in Major League Baseball in 2009 and 2011; born in Sebastian
G.
2010History
As of the 2010 United States census, there were 21,929 people, 9,114 households, and 6,319 families residing in the city.
2020History
=== Climate ===
== Demographics ==
As of the 2020 United States census, there were 25,054 people, 10,684 households, and 6,691 families residing in the city.