Porterdale is a town in Newton County, Georgia, the United States. The population was 1,429 at the 2010 census.
Porterdale was incorporated on March 10, 1917, and was named after Oliver S. Porter, a local mill owner.
Porterdale is located at 33°34′11″N 83°53′53″W (33.569585, -83.897968).
According to the United States Census Bureau, the town has a total area of 1.0 square mile (2.6 km2), all land.
As of the census of 2000, there were 1,281 people, 463 households, and 333 families residing in the town. The population density was 1,241.3 people per square mile (480.2/km2). There were 487 housing units at an average density of 471.9 per square mile (182.6/km2). The racial makeup of the town was 92.58% White, 4.92% African American, 0.31% Native American, 0.94% Asian, 0.55% from other races, and 0.70% from two or more races. Hispanic or Latino of any race were 1.87% of the population.
There were 463 households, out of which 33.5% had children under the age of 18 living with them, 47.7% were married couples living together, 18.1% had a female householder with no husband present, and 27.9% were non-families. 23.3% of all households were made up of individuals, and 13.2% had someone living alone who was 65 years of age or older.