Northern Bavarian is a dialect of Bavarian, together with Central Bavarian and Southern Bavarian. Bavarian is mostly spoken in the Upper Palatinate, although not in Regensburg, which is a primarily Central Bavarian–speaking area, according to a linguistic survey done in the late 1980s. According to the same survey, Northern Bavarian is also spoken in Upper Franconia, as well as in some areas in Upper and Lower Bavaria, such as in the areas around Eichstätt and Kelheim. Few speakers remained in the Czech Republic, mostly concentrated around Aš and Železná Ruda, at the time of the survey, but considering the time which has passed since the survey, the dialect may be extinct in those places today. If it still exists there, it would include the ostegerländische Dialektgruppe. Ethnologue estimates that there were 9,000 speakers of Bavarian in the Czech Republic in 2005, but does not clarify if these were Northern Bavarian speakers.
According to the same linguistic survey, the dialect is flourishing in the areas where it is spoken, despite the fact that most speakers actively use Standard German. In the south of the area where Northern Bavarian is spoken, Central Bavarian is said to have higher prestige, and Northern Bavarian characteristics are therefore not as visible as in the north, where speakers even tend to use a heavy Northern Bavarian accent when speaking German.