One ethnic community grew four times its size in five years, and its members made sure the Census collectors didn't miss anyone.
Facebook posts, a text message blitz and a group session filling out the Census form helped the Chin community become Australias fastest growing ethnic population.
The Myanmar-linked people, based mostly in Melbourne, Perth and northern Adelaide, grew from fewer than 2000 people in 2011 to almost 8000 in 2016, according to new Census data - the largest proportional growth of any major group.
A steady stream of humanitarian arrivals over the past five years was a major factor in the group's growth. However the community awareness campaign ensured that as many Chins as possible were formally counted.