[1] It was developed by the National Administrative Department of Statistics (DANE) of the Republic of Colombia,[2] whose guidelines and rules were established by Decree 1899 of November 22, 2017.

[3] Initially, the plan was to have several phases for the census: e-Census (virtual) from January 9 to March 8, 2018, and face-to-face visits to homes, which began in April and ended on June 30, 2018.

[6] Subsequently, due to incidents with the construction of the Ituango Dam that forced the evacuation of several municipalities, the winter emergency, security problems in the Catatumbo region, and the change of government authorities, face-to-face visits to homes were extended until September, 2018.

[13] According to the official projections that had been made from the records of that census, the population of Colombia in 2018 was expected to be about 49,834,240 inhabitants.

[15] The final census results were announced at a press conference on July 4, 2019, when DANE revealed that 4.09 million people had been left out of the preliminary count due to "a series of failures in the collection of information.