Toponas is an unincorporated rural village in Routt County, Colorado, United States. The community took its name from nearby Toponas Rock. The population in 2010 was 48; in 2017 it is estimated at 26, all in ages ranging from 55 years upwards.
As of 2015, the village consists of a large general store with gas pumps, and a few ranch houses and attendant outbuildings. Just west of the village is a post office, currently serving ZIP Code 80479, which has been in operation since 1888,