Princeton's WordNet(0.00 / 0 votes)Rate this definition: principal, school principal, head teacher, head(noun) the educator who has executive authority for a school. she sent unruly pupils to see the principal.
Aruba Population. Factbook > Countries > Aruba > Demographics. Population: 113,648 (July 2016 est.) Definition: This entry gives an estimate from the US Bureau of the Census based on statistics from population censuses, vital statistics registration systems, or sample surveys pertaining to the recent past and on assumptions about future trends.
The most recent Australian census was held in 2011 and confirmed that the population of Australia on census night (August 9 2011) was 21,507,717. The 2016 census is currently in progress, and the results will be released in April 2017.