All the chats in Departamento de O’HigginsFree chat in San BernardoFree chat in La Clotilde× Departamento de O’Higgins O'Higgins is a department in the province of Chaco, Argentina. The department has 1580 km². And its population is 19 231 hab.: "INDEC 2001 Census." According to estimates of the INDEC in 2005 had 24 913 hab.