Municipalities around the mountain
The mountain is surrounded by urban areas. On the west lie Athens, Zografou, Kaisariani, Vyronas, Ymittos, Argyroupoli, Elliniko, Glyfada, Voula and Vouliagmeni. On the east lie Varkiza, Vari, Markopoulo and Paiania. On the north lie Papagou, Cholargos, Agia Paraskevi, Gerakas and Glyka Nera.
The mountain also has an institutional guardian. The Association for the Protection and Development of Hymettus (SPAY) presents itself on its website as a special-purpose association made up of 12 neighbouring municipalities around Hymettus, based in Ilioupoli. Its president, Isidoros Madis, describes five action axes: shielding the mountain, promoting it as a reference point, forest awareness, a "smart" Hymettus, and civil protection with volunteering. The site also reports a Memorandum of Cooperation with the National Observatory of Athens for a fire-weather station on Hymettus. The names of the member municipalities were not readable as text on the page, so no list is given.
On the western side there are also large university facilities, the so-called University Campus. Population figures are not included here, because they have not yet been verified by an official source.
Population and economic figures are not included, because they were not verified from an official source (ELSTAT or the municipalities).