Noble County is a county located in Ohio. As of the 2010 census, the population was 14,645, making it the third-least populous county in Ohio. Its county seat is Caldwell.

Noble County was formed on March 11, 1851 from portions of Guernsey, Morgan, Monroe and Washington counties. It was the last and youngest county to be formed in the state. It was named for either James Noble or Warren P. Noble, each of whom was an early settler in this region.

Noble County was home to the first North American oil well, the Thorla-McKee Well, which struck oil in 1814. For a time this was a center of oil production in the state.

In 1925, a United States Navy dirigible, USS Shenandoah, was caught in a storm over Noble County. It broke into several pieces, resulting in the deaths of 14 persons on board; 29 survived.


Batesville Dexter City
Belle Valley Sarahsville (1st county seat)
Caldwell (county seat) Summerfield


Beaver Marion
Brookfield Noble
Buffalo Olive
Center Seneca
Elk Sharon
Enoch Stock
Jackson Wayne

Unincorporated Communities

Ava Hoskinsville
Carlisle Keithtown
Crooked Tree Kennonsburg
Dudley Middleburg
Dungannon Moundsville
East Union Mount Ephraim
Elk Olive Green
Florence Rochester
Fulda Sharon
Gem South Olive
Harriettsville Steamtown
Hiramsburg Whigville