Rockdale 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 Georgia

Georgia (U.S. state)

Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788...

. As of 2000, the population was 70,111. The 2007 Census Estimate shows a population of 82,052. Two years later, the population was 84,569. The 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....

 is Conyers

Conyers, Georgia

Conyers is the only city in Rockdale County, Georgia, USA. It is twenty-four miles east of Atlanta. As of the 2000 census, the city population was 10,689. Census estimates of 2005 indicate a population of 12,205. The city is the county seat of Rockdale County. By 2009, the reported population was...

.
According to the 2000 census, the county has a total area of 132.13 square miles (342.2 km²), of which 130.63 square miles (338.3 km²) (or 91.28%) is land and 1.5 square miles (3.9 km²) (or 1.14%) is water.