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During the 4th century BC, there may well have been some 250,000–300,000 people in Attica. Citizen families may have amounted to 100,000 people and out of these some 30,000 will have been the adult male citizens entitled to vote in the assembly. . .

Only adult male Athenian citizens who had completed their military training as ephebes had the right to vote in Athens. The percentage of the population (of males) that actually participated in the government was about 20%. This excluded a majority of the population, namely slaves, freed slaves, children, women and metics. The women had limited rights and privileges and were not really considered citizens.

Also excluded from voting were citizens whose rights were under suspension (typically for failure to pay a debt to the city: see atimia); for some Athenians this amounted to permanent (and in fact inheritable) disqualification.