Hacker is of German origin and often Jewish origin. Hacker also has connection to England, but falls into the Acree, Acre, etc trees. See: http://www.shtetlinks.jewishgen.org/Kolomea/nameorigin.htm Hacker is field workers, plower, wood cutter, etc origin. Which makes since as that history lists in census reports...farmer-farmer-farmer.
Hope that helps.