Avaj DistrictAvaj District is a former administrative division of Buin [Zahra County], Qazvin province, Iran. Its capital was the city of Avaj.HistoryIn 2012, the district was separated from the county in the establishment of Avaj County.DemographicsPopulationAt the time of the 2006 National Census, the district's population was 22,273 in 5,607 households. The following census in 2011 counted 26,611 people in 7,839 households.Administrative divisions