Noble county is located in southeastern Ohio and calls Caldwell its county seat. The county population on July 1, 1999, was 14,810, an increase of 3,474 over the 1990 census.
The county was organized in 1851 and is named in honor of James Noble, one of the first settlers in the area living near Sarahsville. It was formed from parts of Guernsey, Monroe, Morgan and Washington counties.
Historic sites in the county include the Huffman Covered Bridge near Middleburg, the Samuel Caldwell House in Caldwell, the U.S.S. Shenandoah (a lighter-than-air craft built in 1925 for the U.S. Navy as a weapons system, flying laboratory and scouting vessel) crash sites just outside the city and the Samuel Danford Farm, Church and Cemetery near Summerville.
The largest body of water in the county is Senacaville Lake in the northern section with Wolf Run Lake and State Park to the west just east of I-77.