Trenton is part of the Chattanooga, Tennessee–GA Metropolitan Statistical Area.

Trenton is also referred to as “Lineman Country” as it has one of the largest trade schools for power linemen.

In 1839 Salem was designated the seat of the newly formed Dade County.

[4] The present name is a transfer from Trenton, the state capital of New Jersey.

[6] The city is located in the northwestern part of the state along Interstate 59, which runs from southwest to northeast to the west of the city, leading northeast 20 mi (32 km) to Chattanooga, Tennessee (via I-59 to I-24), and southwest 128 mi (206 km) to Birmingham, Alabama.

U.S. Route 11 and Georgia State Route 136 are the main roads through the center of the city, with U.S. 11 leading northeast to Chattanooga and southwest 35 mi (56 km) to Fort Payne, Alabama.

According to the United States Census Bureau, the city has a total area of 3.1 square miles (8.0 km2), all land.

As of the 2020 United States census, there were 2,195 people, 1,025 households, and 700 families residing in the city.