[3] The municipal unit covers the southern part of the hilly Kyllini peninsula, and the plains to the southeast.

The town was at the junction of two railway lines, one from Kavasila to Kyllini, and the branch Vartholomio–Loutra Kyllinis railway line.

[citation needed] There are also two churches with yards, and a town square with cafes and tavernas.

In 1988 and in 2002, two big earthquakes struck the town and most buildings were damaged, including its high school.

[citation needed] The municipal unit Vartholomio is subdivided into the following communities (constituent villages in brackets): The village Vranas had 316 inhabitants in 2011.