'The Population and Housing Census is one of three national statistical censuses as stipulated in the Statistics Law. The 2019 Population and Housing Census was conducted at 00:00 on 1 April 2019 in accordance with Decision No 772/QD-TTg dated 26 June 2018 by the Prime Minister. The Census sought to collect basic population and housing information across the entire Socialist Republic of Viet Nam to serve national socio-economic development policies and to monitor the implementation of Sustainable Development Goals per the Government of Viet Nam’s commitment. The 2019 Population and Housing Census was implemented in the context of a vigorous fourth technological revolution, and applied information technology (IT) in all stages of the Census for the first time. Three types of information collection were used synchronously: an online survey form, a mobile-friendly electronic form and a traditional paper-based form.