Built in 1992 by the Schantz Organ Company of Orrville, Ohio, the organ has 33 ranks. There is a mixture on each of the three manual divisions, and a full set of reeds (Krumhorn on the Positiv; Oboe, Bombard, and Trumpet on the Swell; and Trompette on the Great). The combination action is configured with 26 memory levels.

Dr. David Gay is the organist at St. Mark’s.