Natchez () is the county seat and only city of Adams County, Mississippi, United States. Natchez has a total population of 15,792 (as of the 2010 census). Located on the Mississippi River in Concordia Parish, Louisiana, across from Vidalia, Natchez was a prominent city in the antebellum years, a center of cotton planters and Mississippi River trade.
Natchez is some 90 miles (140 km) southwest of Jackson, the capital of Mississippi, which is located near the center of the state. It is approximately 85 miles (137 km) north of Baton Rouge, Louisiana, located on the lower Mississippi River. Natchez is the 25th-largest city in the state. The city was named for the Natchez tribe of Native Americans, who with their ancestors, inhabited much of the area from the 8th century AD through the French colonial period.
Established by French colonists in 1716, Natchez is one of the oldest and most important European settlements in the lower Mississippi River Valley. After the French lost the French and Indian War (Seven Years' War), they ceded Natchez and near territory to Great Britain in the Treaty of Paris of 1763. (It later traded other territory east of the Mississippi River with Great Britain, which expanded what it called West Florida).