Rapperswil, Switzerland - 12 March, 2015: St. Gallen Kantonalbank office. Rapperswil is a former municipality and since January 2007 part of the municipality of Rapperswil-Jona in the Wahlkreis (constituency) of See-Gaster in the canton of St. Gallen in Switzerland, located at the east side of the Lake Zurich.