Comstock is a city in Clay County, Minnesota, United States. The population was 93 at the 2010 census.
According to the United States Census Bureau, the city has a total area of 0.2 square miles (0.6 km²), all of it land.
As of the census of 2000, there were 123 people, 47 households, and 39 families residing in the city. The population density was 570.5 people per square mile (215.9/km²). There were 49 housing units at an average density of 227.3 per square mile (86.0/km²). The racial makeup of the city was 95.12% White, 1.63% Native American, 1.63% Asian, 0.81% from other races, and 0.81% from two or more races. Hispanic or Latino of any race were 1.63% of the population.