The European Center for Ethnic Studies provides a series of statistics regarding the ethnic grups in Romania, following the topics bellow:

›› population structure after the mother language (2002),
›› ethnic structure of the population after historical regions and counties (2002),
›› demographic evolution of the population after minority status (1930-2002),
›› political representation in the Romanian Parliament (2004),
›› illiteracy rate after ethnic status (2002),
›› educational level after ethnic status (2002),
›› birth rate after the group age of the mother and the ethnic status (2002),
›› economic situation of the population after the ethnic status (2002).

You can download the file from here.