Bulgaria's National Statistical Institute reported that 5,118,494 people belong to the Bulgarian ethnic group, which is 84.6 percent of those who answered the ethnicity question in the September 2021 census. Compared to 2011, it is a decrease of 0.2%.
508,378, or 8.4%, declared themselves as belonging to the Turkish ethnic group in Bulgaria – a decrease of 0.4% in the last ten years when the previous census was conducted. The third largest ethnic group in Bulgaria are the Roma.
266,720 declared themselves as such, or 4.4% – a decrease of 0.5%. 79,006 people (1.3%) declared that they belonged to other ethnic groups.
15,746 (0.3%) people cannot self-determine. 77.5% of the Bulgarian, 38.4% of the Turkish and 51.0% of the Roma ethnic group live in the cities of Bulgaria.
Population aging in Bulgaria mostly affects people from the Bulgarian ethnic community 25.0%, the Turkish ethnic group is 19.8%, and the Roma 7.3%.