Rio Grande do Norte is divided into 167 municipalities, which are grouped into four mesoregions and 23 microregions. Of the 167 municipalities, Natal has the highest population, with 803,811 inhabitants, while Viçosa, with 1,618 inhabitants, has the lowest. The largest municipality by area is Mossoró, with an area of 2,110 square kilometres (815 sq mi); the smallest is Senador Georgino Avelino, named after the former Senator and Rio Grande do Norte Governor José Georgino Avelino,[9] which covers an area of 26 square kilometres (10 sq mi).
^"Área Territorial Oficial" [Official Territorial Area] (in Portuguese). Brazilian Institute of Geography and Statistics. Archived from the original on 27 June 2012. Retrieved 26 November 2011.
^ ab"Censo 2010– Rio Grande do Norte" [Census 2010– Rio Grande do Norte] (PDF) (in Portuguese). Brazilian Institute of Geography and Statistics. 29 November 2010. Archived from the original(PDF) on 14 June 2011. Retrieved 26 November 2011.
^ ab"Divisão Territorial do Brasil" [Territorial Divisions of Brazil] (Zip file) (in Portuguese). Brazilian Institute of Geography and Statistics. 1 July 2008. Retrieved 26 November 2011.
^ abc"História" [History] (in Portuguese). State Government of Rio Grande do Norte. Archived from the original on 22 March 2012. Retrieved 10 March 2012.
^"Senador Georgino Avelino" (in Portuguese). Portal Oficial De Turismo do Rio Grande do Norte. Archived from the original on 2 April 2015. Retrieved 6 March 2015.
^ ab"DTB_2016_v2.zip"(Zip file) (in Portuguese). Brazilian Institute of Geography and Statistics. Retrieved 22 April 2020. DTB_BRASIL_MUNICIPIO.xls within zip file.