Österdal is a village in Västervik Municipality, in Kalmar County, Sweden. Österdal lies at 46 m above sea level. The nearest city is Västervik, 11.1 km to the northeast. Beaches nearby: Breviksbadet (11 km), Sandviksbadet (13 km), Idösund (15 km). Among the landmarks around are Smalspårsjärnvägen Hultsfred–Västervik (11.1 km), Sankta Gertruds kyrka, Västervik (11.0 km) and Hjorteds kyrka (14.3 km).