Where is the northernmost town in the world?

Longyearbyen, on the Norwegian archipelago of Svalbard at about 78 degrees north, is generally regarded as the northernmost town in the world with a substantial permanent population of around 2,400 people. Even further north lie tiny research and military outposts such as Ny-Alesund and Alert in Canada, but these are not true towns. Longyearbyen experiences polar night from late October to mid-February, when the Sun never rises, and midnight Sun from April to August. It is also famous for a curious law: because the permafrost prevents bodies from decomposing, burials in the town cemetery have been effectively banned since the 1950s.