(Today, as for the OIKAWA family name, thirteen percent of it is in Hokkaido, seven percent in Tokyo and some of it is in the prefectures of Ibaragi, Saitama and Shizuoka).
（現在、及川という苗字は北海道に13％、東京都に7％が住む他、茨城・埼玉・静岡の各県にもいる）。