Dayton is a town in Marengo County, Alabama, United States. The population was 28 at the 2020 census, down from 52 in 2010 and 60 in 2000.

Dayton began to be arranged in the upfront 19th century, with a town survey over and done with and a “public well” established in 1832. The publicize office was time-honored in 1837. It was incorporated on January 13, 1844. A devastating tornado hit the town in 1852. By 1860 the town had male and female academies, a hotel, cotton gin, oil mill, blacksmith shop, tavern, cabinet shop, drug store, and several general merchandise stores. The town afterward had several large homes, though most are now gone. One of the survivors, the William Poole House, is listed upon the National Register of Historic Places. The subside in agricultural activity exceeding the last century has reduced the population to a fragment of what it in the declare of was.

Dayton is located in northeastern Marengo County at 32°20′59″N 87°38′28″W / 32.34972°N 87.64111°W / 32.34972; -87.64111Coordinates: 32°20′59″N 87°38′28″W / 32.34972°N 87.64111°W / 32.34972; -87.64111 (32.349733, -87.641247). It is 11 miles (18 km) northeast of Linden, the county seat, and 20 miles (32 km) southeast of Demopolis, the largest city in the county.

According to the U.S. Census Bureau, Dayton has a total Place of 1.0 square mile (2.6 km), all land. The town sits on a ridge that drains southeast to Dry Creek and northwest to Little Dry Creek, both tributaries of Chickasaw Bogue, which flows west across the county to the Tombigbee River.