How many gods were considered Olympus gods?

In Greek mythology, there are traditionally twelve major gods known as the Olympian gods, who resided on Mount Olympus. These typically include Zeus, Hera, Poseidon, Demeter, Athena, Apollo, Artemis, Ares, Aphrodite, Hephaestus, Hermes, and Hestia (or Dionysus, depending on the source). These deities were central to ancient Greek religion and mythology, each representing various aspects of life and nature.