Romania's Nord-Vest development region has a total population of 2,579,545 (2011 Census). In 2002 The region is one of the most ethnically-diverse in Romania, with 25% of the population coming from a minority group. After Romanians, who make up 75% of the population, the largest minority group are Hungarians, who comprise slightly less than 20% of the population. This is mainly due to area's history as part of Austria-Hungary. Hungarians are mainly concentrated in urban centres, especially those near the Hungarian border, such as Oradea and Satu Mare. The third largest minority are Roma people, who make up 3.5%, slightly above the national average. Roma people are spread relatively evenly throughout the region, even though the highest proportions are in Bihor county, where approximately 5% of the population is Roma.