As a designated place in the 2016 Census of Population conducted by Statistics Canada, Tompkins recorded a population of 114 living in 48 of its 66 total private dwellings, a change of  from its 2011 population of 135.
Tompkins was identified as a residential area in the 2016 Census of Population carried out by Statistics Canada. The census reported a population of 114 people living in 48 of its 66 private homes, showing a decrease from 135 residents in 2011.