Pyrgos is a city in the northwestern Peloponnese, Greece, capital of the regional unit of Elis and the seat of the Municipality of Pyrgos. The city is located in the middle of a plain, 4 kilometres from the Ionian Sea. The river Alfeios flows into sea about 7 km (4 mi) south of Pyrgos. The population of the town Pyrgos is 26,052, and of the municipality 45,365 (2021). Pyrgos is 16 km (10 mi) west of Olympia, 16 km (10 mi) southeast of Amaliada, 70 km (43 mi) southwest of Patras and 85 km (53 mi) west of Tripoli.