In the 2021 Census of Population conducted by Statistics Canada, Niton Junction had a population of 88 living in 43 of its 49 total private dwellings, a change of 25.7% from its 2016 population of 70. With a land area of 1.04km2 (0.40sqmi), it had a population density of 84.6/km2 (219.2/sqmi) in 2021.
As a designated place in the 2016 Census of Population conducted by Statistics Canada, Niton Junction had a population of 38 living in 15 of its 15 total private dwellings, a change of 46.2% from its 2011 population of 26. With a land area of 0.91km2 (0.35sqmi), it had a population density of 41.8/km2 (108.2/sqmi) in 2016.
↑"Geographical Identification and Population for Unincorporated Places of 25 persons and over, 1971 and 1976". 1976 Census of Canada(PDF). Supplementary Bulletins: Geographic and Demographic (Population of Unincorporated Places—Canada). Vol.Bulletin 8SG.1. Ottawa: Statistics Canada. 1978.