Number of Members in Zetas

According to security officials and intelligence estimates, Mexican drug cartel “The Zetas” are believed to have around 10,000 members associated with the group across Mexico, Central America and the United States. However, the bulk of the members are likely affiliates and small time cells rather then full time members.

Source: “”Zetas” drug gang grows, sows fear in Mexico,” Reuters, October 12, 2010.