la Champagne Government Mayor Masayuki Hayashi Area Total 6.7 km^2 (2.6 sq mi) Population (2014 census) Total 28,498 Density 920/km^2 (2,400/sq mi) Time zone UTC+01:00 (Central European Summer Time) Postal code(s) 5236 SFOS number 0447 Localities Frinvillier and Vauffelin Surrounded by Beckenried, Ennetbürgen, Gersau (SZ), Weggis Website www.vitznau.ch Profile (in French), retrieved 2009-12-21