The most commonly used home language for residents aged 6 &amp; over in Taiwan, Penghu, Kinmen &amp; Matsu and the difference in proportion between that &amp; the 2nd commonly used one in 2010. (blue 'cmn' = "Mandarin", green 'nan' = "Hokkien"/"Min Nan", hot-pink 'hak' = "Hakka", burgundy 'map' = austronesian languages) Made with d3.js &amp; Inkscape
Own work with sources from 2010 population and housing census by DGBAS, Executive Yuan. The base map is from Taiwan local government map.svg
Yoxem  (base map is made by Kanguole)