Statistics Canada has not recently published a population for Millarville.
However, Industry Canada shows that Millarville's greater rural area had a total population of 1,949 living in 819 dwellings in 2001. With a land area of 365.8 km2 (141.2 sq mi), its greater rural area has a population density of 6.0/km2 (16/sq mi).
Millarville shares its name with the Millarville Market and Fair. Founded in 1907, the market and fair are hosted by the Millarville Racing and Agricultural Society on land northeast of the hamlet, 1.6 kilometers east down Highway 549, east. (MRAS).