Men who were citizens and over the age of 18.
Athenian democracy started in the fifth century BC in the Greek city-state of Athens, comprising the city of Athens and the surrounding territory of Attica, and is the first known democracy in the world. Other Greek cities set up democracies, most following the Athenian model, but none are as well documented as Athens'.
It was a system of direct democracy, in which participating citizens voted directly on legislation and executive bills. Participation was not open to all residents: to vote one had to be an adult, male citizen i.e. neither a foreign resident, slave or a woman and the number of these "varied between 30,000 and 50,000 out of a total population of around 250,000 to 300,000" or "no more than 30 percent of the total adult population. Athenian democracy created around the fifth century BC in the Greek city-province of Athens, including the city of Athens and the encompassing domain of Attica, and is the main known democracy on the planet. Other Greek urban areas set up majority rules systems, most after the Athenian model, however, none are also archived as Athens'.
It was an arrangement of direct democracy, in which taking interest subjects voted straightforwardly on enactment and official bills. Interest was not open to all inhabitants: to vote one must be a grown-up, male subject i.e. neither a remote inhabitant, slave or a lady and the quantity of these "fluctuated in the vicinity of 30,000 and 50,000 out of an aggregate populace of around 250,000 to 300,000" or "close to 30 percent of the aggregate grown-up populace.