Santiago do Cacém has a total area of 1,060 km² and a total population of 30,305 inhabitants. The municipality is composed of 11 parishes. The present Mayor is Vitor Manuel Caro Proença, elected by the Unitarian Democratic Coalition. The municipal holiday is July 25.
- Harmonia Society
- Park Rio da Figueira
- Miróbriga Ruins
- Herdade do Reguenguinho, AEstrada Nacional 262, Km 68,5 Cercal Alentejo.
- Pousada de Santiago do Cacém - Quinta da Ortiga, Quinta da Ortiga, 7540-909, ☏ , , fax: , ✉ firstname.lastname@example.org. This nature hotel has a beautiful chapel and it's encircled in a landscape crossed by a refreshing river, with terraced gardens and a swimming pool where the former watering reservoir used to be.