The Municipality of Pyrgos belongs to the Prefecture of Ilia and its present form is due to the consolidation of the former municipalities of Pyrgos, Olenis, Volakos and Iardanos, according to the Kallikratis program.
The municipality has an area of ​​455.12km2 and a population of 47.995 inhabitants, based on the latest census of 2011.
The Municipality of Pyrgos is based in Pyrgos, which is the capital of the Prefecture of Ilia.
Pyrgos is an economic and administrative center of the Prefecture all the years, culminating in the 19th century, when the city was one of the largest centers for raisin trade.
The city has many buildings of neoclassical architecture, such as the Lazio Municipal House, the Municipal Market occupying an entire building block, the Apollo Municipal Theater, the Manolopouleio Municipal Hospital and the city's Railway Station.