Gjerstad Municipality

Gjerstad is a municipality in Agdercounty, Norway. It is located in the traditional region of Sørlandet, in the southeastern part of the county, along the border with Telemark county. The administrative centre of the municipality is the village of Gjerstad. Other villages in the municipality include Ausland, Eikeland, Fiane, Gryting, Østerholt, Rød, Sundebru, and Vestøl.

The 322.13-square-kilometre (124.38 sq mi) municipality is the 256th largest by area out of the 357 municipalities in Norway. Gjerstad Municipality is the 255th most populous municipality in Norway with a population of 2,502. The municipality's population density is 8.1 inhabitants per square kilometre (21/sq mi) and its population has increased by 1.2% over the previous 10-year period.