The municipality encompasses mainly the island of Magerøya, but also parts of the mainland east and west of the fjord of Porsangen.
Most of the inhabitants live in the fishing village of Honningsvåg, but Nordvågen, Kamøyvær, Skarsvåg and Gjesvær are also important places.
The municipality's most famous point, after which it is named, is Nordkapp (North Cape). This 307 m high cliff is usually referred to as the northernmost point of Europe. Some 200,000 tourists visit annually, during the two to three months of summer. The neighbouring point of Knivskjellodden is, however, some 1,500 m further north.