Plainfield is an unincorporated community in Dodge County, Georgia, United States.

The community is located near Georgia State Route 117, 7.4 miles (11.9 km) northeast of Eastman.

The Town of Plainfield is a rural farming community in northeast Dodge County.

The local train, Wrightsville and Tennille Railroad, known as the "Wiggle and Twist" made a daily round-trip from Dublin through Rentz, Cadwell, and Plainfield on to Eastman.

In 1912 the city council approved a bid to build a town guardhouse, which was accomplished at the total cost of $12.50.