Borgarbyggð is a municipality in the west of Iceland.
The biggest township in the municipality is Borgarnes, with a population of 1,887 inhabitants. Other densely populated areas in the municipality include Bifröst, Hvanneyri, Kleppjárnsreykir, Reykholt and Varmaland.
Source: https://en.wikipedia.org/wiki/Borgarbygg%C3%B0