| Official Name: | Cinnamon Lake, Ohio |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Ohio |
| Pushpin Label: | Cinnamon Lake |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Ashland |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 4.77 |
| Area Land Km2: | 4.19 |
| Area Water Km2: | 0.58 |
| Area Total Sq Mi: | 1.84 |
| Area Land Sq Mi: | 1.62 |
| Area Water Sq Mi: | 0.23 |
| Population As Of: | 2020 |
| Population Total: | 1237 |
| Population Density Km2: | 295.14 |
| Population Density Sq Mi: | 764.52 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1184 |
| Coordinates: | 40.9836°N -82.1914°W |
| Area Code: | 419 |
| Blank Name: | FIPS code |
| Blank Info: | 39-15008[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2628875 |
Cinnamon Lake is a census-designated place (CDP) within Jackson Township, Ashland County, Ohio, United States. The population was 1,237 at the 2020 census. It consists of a planned community surrounding a 135acres reservoir also named Cinnamon Lake.[3]
The Cinnamon Lake CDP is located along the northern edge of Jackson Township. The CDP has a total area of 4.8km2, of which 4.2sqkm is land and 0.6sqkm, or 12.19%, is water,[4] consisting of the reservoir Cinnamon Lake. Muddy Fork, the outlet of Cinnamon Lake, flows east, then south, to the Lake Fork Mohican River, then to the Mohican River and into the Walhonding River and finally the Muskingum River, a tributary of the Ohio River.
No numbered highways run through the CDP. It is located 4miles west of West Salem, 3miles northeast of Polk, and northeast of Ashland.