Mexico City is divided into sixteen municipalities (mayoralties) (Spanish: alcaldías), which have regulatory powers and are not fully autonomous in their internal administration. As of 2000, the citizens within a mayoralty elect by plurality a head of government, as of 2016, known as "mayor" (Spanish: alcalde). Mexico City recorded an official 2010 census tally of 8,851,080 inhabitants. Municipalities are subdivided into neighborhoods (colonias in Spanish) and in some cases in the southernmost municipalities, also into towns and rural settlements. Starting from 2018, delegaciones[definition needed] will be known as demarcaciones territoriales and will be managed by an alcalde.