Marne is a census-designated place (CDP) in Licking County, Ohio, United States. The population was 783 at the 2010 census.
As of the census of 2010, there were 783 people, 289 households, and 228 families residing in the CDP. There were 301 housing units. The racial makeup of the CDP was 96.42% White, 0.64% African American, 0.13% Native American, 0.13% Asian, and 2.68% from two or more races. Hispanic or Latino of any race were 2.17% of the population.
There were 289 households out of which 32.9% had children under the age of 18 living with them, 56.4% were married couples living together, 15.2% had a female householder with no husband present, and 21.1% were non-families. 15.9% of all households were made up of individuals and 7.6% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 2.99.
- ^ "American FactFinder". United States Census Bureau. Retrieved 2011-05-14.
Coordinates: 40°04′16″N 82°18′34″W / 40.07111°N 82.30944°W