Coester
Coester is a surname of German origin. It is an Anglicized variant of Köster or Küster, or a variant of Kuster/Koster. These names derive from the Middle High German küster, meaning sexton or church caretaker. The spelling Coester likely arose through transliteration, regional dialect shifts, or immigration records in English-speaking countries.
Geographic distribution: The name is found primarily in German-speaking countries and in the United States and
Variants include Koester, Köster, Kuster, and Koster. The form Köster preserves the umlaut; Koester is common
Notable bearers: The surname has been borne by individuals across fields such as science, engineering, and the
See also: Koster, Koester, Köster. For genealogical research, it can be helpful to consider spelling variants.