The municipality of Pyrgos (47,995 inhabitants in 2011; 45,510 ha) was formed in the 2011 local government reform by the merger of the former municipalities of Iardanos (Ιάρδανος, 4,013 inh.), Oleni (Ωλένη, 9,026 inh.), Pyrgos (35,572 inh.), and Volakas (Βώλακας, 3,552 inh.).
Pyrgos (lit., "a tower") is located in the western part of the Peloponnese, in the middle of a plain, 4 km from the Ionian Sea. Olivier Touzeau, 19 June 2014
The previous flag of Pyrgos (Kokkonis website) is white with the municipal emblem, in blue. The new municipality uses the same flag as the former one. Olivier Touzeau, 19 June 2014