The largest concentration of classical musicians is in Europe, where there are an estimated 5-10 million musicians. This is due in part to the long history of classical music in Europe, as well as the fact that many European countries have strong music education programs.
The United States is also home to a large number of classical musicians, with an estimated 2-5 million musicians. The Asian continent also has a significant number of classical musicians, with an estimated 1-2 million musicians.
The number of classical musicians in the world is likely to continue to grow in the coming years, as more and more people around the world gain access to music education and opportunities to perform.