[1] Germencik is located in the middle of the fertile Büyük Menderes (Meander) plain, inland from the Aegean coastal town of Kuşadası, on the Aydın-İzmir highway 25 km (16 mi) from the city of Aydın.

Until the 1950s, the plain was a swampy area prone to regular flooding and Germencik grew as people moved from the wet lands into the town.

Today Germencik itself is a small town of 12,000 people, astride the Izmir-Aydın highway, providing high schools, a hospital, a library and other services for the surrounding district.

Industry in the area is mainly the processing of the local produce to make tahini, halva, olive oil, etc.

[5][6] The hot springs in the villages of Alangüllü, Çamur, and Gümüşlü, all 10–12 km north of Germencik.