City of Sebastian Florida. Sebastian is a city in Indian River County, Florida, United States, with a small portion in Brevard County. In 2010, the population recorded by the U.S. Census Bureau was 21,929.
Like any Internet service, fiber optic Internet download speeds depend on your connection. Not all fiber services are created equal, much like broadband. Fiber is not distance sensitive like copper based services, but speeds can vary. Fiber is faster than average broadband speeds in the USA.
In the early days of the Internet, cable Internet providers supported broadband network speeds as low as 512 Kbps (0.5 Mbps) for downloads. These speeds have increased over the years by a factor of 100 with improvements in Internet network technology.