HöfuðborgarsvæðiðMosfellsbærAdministrative centre: Mosfellsbær Home/Iceland/Municipalities/Mosfellsbær Population · 202613,772Area185.0 km²Administrative centreMosfellsbærMunicipality number1604About the municipalityMosfellsbær is a municipality in the Capital Region of Iceland. Its administrative centre is Mosfellsbær.The municipality had a population of 13,772 in 2026. It covers approximately 185 km².The municipality provides local administration and services for the communities within its boundaries.Towns and settlements1SuðvesturlandMosfellsbærView place