Central Somerset is an unorganized territory in Somerset County, Maine, United States. The population was 336 at the 2000 census.
According to the United States Census Bureau, the unorganized territory has a total area of 201.4 km² (77.8 mi²). 198.5 km² (76.6 mi²) of it is land and 2.9 km² (1.1 mi²) of it (1.45%) is water.
The territory consists of the townships of Concord and Lexington.
As of the census of 2000, there were 336 people, 154 households, and 91 families residing in the unorganized territory. The population density was 1.7/km² (4.4/mi²). There were 343 housing units at an average density of 1.7/km² (4.5/mi²). The racial makeup of the unorganized territory was 99.40% White, 0.30% Black or African American, and 0.30% from two or more races. Hispanic or Latino of any race were 0.60% of the population.
There were 154 households out of which 22.7% had children under the age of 18 living with them, 44.2% were married couples living together, 5.2% had a female householder with no husband present, and 40.9% were non-families. 32.5% of all households were made up of individuals and 15.6% had someone living alone who was 65 years of age or older. The average household size was 2.18 and the average family size was 2.73.
In the unorganized territory the population was spread out with 19.3% under the age of 18, 7.7% from 18 to 24, 19.9% from 25 to 44, 35.1% from 45 to 64, and 17.9% who were 65 years of age or older. The median age was 46 years. For every 100 females there were 102.4 males. For every 100 females age 18 and over, there were 110.1 males.