Campbell County is a county located in the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Kentucky

Kentucky

The Commonwealth of Kentucky is a state located in the East Central United States of America. As classified by the United States Census Bureau, Kentucky is a Southern state, more specifically in the East South Central region. Kentucky is one of four U.S. states constituted as a commonwealth...

. It was formed on December 17, 1794, from sections of Scott, Harrison and Mason counties. As of 2010, the population was 90,336. Its county seat

County seat

A county seat is an administrative center, or seat of government, for a county or civil parish. The term is primarily used in the United States....

s are Alexandria

Alexandria, Kentucky

As of the census of 2000, there were 8,286 people, 2,884 households, and 2,275 families residing in the city. The population density was 1,538.7 people per square mile . There were 2,989 housing units at an average density of 555.1 per square mile...

 and Newport

Newport, Kentucky

Newport is a city in Campbell County, Kentucky, United States, at the confluence of the Ohio and Licking rivers. The population was 15,273 at the 2010 census. Historically, it was one of four county seats of Campbell County. Newport is part of the Greater Cincinnati, Ohio Metro Area which...

. The county is named for Colonel

Colonel

Colonel , abbreviated Col or COL, is a military rank of a senior commissioned officer. It or a corresponding rank exists in most armies and in many air forces; the naval equivalent rank is generally "Captain". It is also used in some police forces and other paramilitary rank structures...

 John Campbell (1735–1799), Revolutionary War

American Revolutionary War

The American Revolutionary War , the American War of Independence, or simply the Revolutionary War, began as a war between the Kingdom of Great Britain and thirteen British colonies in North America, and ended in a global war between several European great powers.The war was the result of the...

 soldier.
Campbell County was founded December 17, 1794, two years after the creation of the Commonwealth of Kentucky, becoming the state's 19th county.