I have a surname that is English, so I was surprised that the highest concentration of my surname is on the coast of Sweden, followed by the U.S. Try your surname at the World Name Profiler site. Hamrick Software has a similar surname tracker, which tracks your surnames through the U.S. at points of time. Not much distribution on the surname before 1920 and in just a few states.
In the US, the Eubanks surname ranks 1,673 in most common and there were 19,616 in the 2000 Census, according to David L. Word, Charles D. Coleman, Robert Nunziata and Robert Kominski (2008) and featured on Mongabay. “Demographic Aspects of Surnames from Census 2000”. U.S. Census Bureau. Family lore says the name was Eubank originally, which ranks 5,986 in most common with 5,298 occurrences in the 2000 U.S. Census.