THE UNICOI COUNTY LAND BRIEF
Land in the
Southern Sedimentary Ridges setting.
Unicoi County has 186.1 square miles of land in Tennessee. 5 mapped landscape regions meet across Unicoi County: Southern Sedimentary Ridges, Southern Crystalline Ridges and Mountains, Limestone Valleys and Coves, among others.
Forested ridges, plateaus and high mountains extend through the Blue Ridge. Elevation, rainfall and sheltered coves create marked differences in forest communities across short distances.
Regional context: Blue Ridge ↗ · Regional mapping across the county footprint
Where the landscape changes
Unicoi County intersects 5 mapped regional units. The largest mapped shares are:
- Southern Sedimentary Ridges58.3%
- Southern Crystalline Ridges and Mountains27.5%
- Limestone Valleys and Coves8%
- Southern Limestone/Dolomite Valleys and Low Rolling Hills4%
- Southern Metasedimentary Mountains2.2%
Ridge and Valley in Unicoi County
Long, roughly parallel ridges and valleys follow folded and faulted rock layers. Limestone valleys, sandstone ridges and other geologic contrasts produce varied terrain and numerous regional springs and caves.
Read the regional source ↗Finding your parcel within Unicoi County
The atlas lists 3 cities, towns, townships, and Census communities associated with Unicoi County, including Unicoi, Erwin, Banner Hill. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Unicoi County by land and water
The Census records 0.32 square miles of water within Unicoi County, or 0.2% of its total area. That share is close to Unicoi County’s 0.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Unicoi County has 133.1 times the land area of nearby Banner Hill CDP (1.4 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Carter County, Greene County, Washington County within Tennessee. A tract near one of these lines should be matched to the county identifier on its own records.

