Nowadays, there are not so many people, approximately 4000 according to an estimation, who carry Minamoto as their surname, because the families of the Minamoto clan (whose hereditary title is Minamoto) have their own family names.
源姓（本姓が源氏）の家系はそれぞれ別の苗字を号しているため、現在「源」を今日的な意味の姓として名乗る例はそれほど多くなく、推定人口は4,000人程である。