In 1994 the inhabitants of Hafnir, Njarðvík and Keflavík agreed to form a municipality called Reykjanesbær with a population of 20,416 (July 2022).

A cabin in Hafnir abandoned between 770 and 880 provides the earliest known archaeological evidence of settlement in Iceland.

[2] In 1881, the American ship Jamestown ran aground off Hafnir with no one aboard.

The ship's anchor is on display outside the village church.

This Iceland location article is a stub.