Map showing percentage of people stating Javanese as their primary language at home, by province.
Data taken from: Naim, Akhsan; Syaputra, Hendry (2011). Kewarganegaraan, Suku Bangsa, Agama, dan Bahasa Sehari-Hari Penduduk Indonesia: Hasil Sensus Penduduk 2010. Jakarta: Badan Pusat Statistik. ISBN 9789790644175.
Map based on File:Indonesian_provinces_blank.svg with some modification.
Own work
Masjawad99