As of 30 November 2010, it had a population of 3,752 and an area of . The municipality of St Lorenzen contains the
frazioni (subdivisions, mainly villages and hamlets) Ellen (Elle), Fassing (Fassine), Runggen (Ronchi), Montal (Mantana), Pflaurenz (Floronzo), Saalen (Sares), Sonnenburg (Castelbadia), Stefansdorf (Sante Stefano), St Martin (San Martino), Moos (Palù), Lothen, and Onach. St Lorenzen borders the following municipalities:
Bruneck,
Kiens,
Pfalzen,
Lüsen,
Mareo, and
Rodeneck. ==History==