| Official Name: | Marne, Ohio |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Ohio#USA |
| Pushpin Label: | Marne |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Licking |
| Subdivision Type3: | Township |
| Subdivision Name3: | Madison |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.27 |
| Area Land Km2: | 2.27 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.88 |
| Area Land Sq Mi: | 0.88 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 772 |
| Population Density Km2: | 340.00 |
| Population Density Sq Mi: | 880.27 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 801 |
| Coordinates: | 40.0711°N -82.3094°W |
| Postal Code Type: | ZIP Code |
| Blank Name: | FIPS code |
| Blank Info: | 39-47950[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1061379 |
Marne is an unincorporated community and census-designated place (CDP) in Licking County, Ohio, United States. As of the 2020 census it had a population of 772.
Marne is in eastern Licking County, in the eastern part of Madison Township. Ohio State Route 16 forms the southern edge of the community, leading west 5miles to Newark, the Licking county seat, and northeast to Coshocton. Marne is in the valley of the Licking River, which passes to the south of State Route 16. The Licking is an east-flowing tributary of the Muskingum River and part of the Ohio River watershed.
According to the U.S. Census Bureau, the Marne CDP has a total area of 2.3sqkm, of which 3568order=flipNaNorder=flip, or 0.16%, are water.[2]
As of the census[3] of 2010, there were 783 people, 289 households, and 228 families living 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.