《晋书·志·第四章》
晋初在长安置壅蛆，统管七个郡国，三十九县，九万九千五百户。
晋初于长安置雍州，统郡国七，县三十九，户九万九千五百。
At the beginning of Jin Dynasty, Yongzhou was established in Chang'an, and it governed seven counties, 39 prefectures and 99,500 households.