The administrative centre of the municipality is the town of Mandal. The town of Mandal is the second largest town by population in Vest-Agder county after the nearby town of Kristiansand and it is also the fourth largest city in all of the Sørlandet/Agder region. Besides the town of Mandal, the municipality also includes the villages of Bykjernen, Skjebstad, Sånum-Lundevik, Skogsfjord-Hesland, Krossen, Harkmark, Skinsnes-Ime, and Tregde-Skjernøy.