This article presents detail of the results in the 2007 Japanese House of Councillors election, breaking down results by prefectures of Japan.
The prefecture of Hokkaidō have two councillors in the Upper House. Democratic Party of Japan and the Liberal Democratic Party each won one seat.
The prefecture of Aomori have one councillor in the Upper House. Democratic Party of Japan won the seat.
The prefecture of Akita has one councillor in the Upper House. An independent supported by the Democratic Party of Japan and Social Democratic Party won the seat.
The prefecture of Iwate has one councillor in the Upper House. The Democratic Party of Japan scored a major victory.
The prefecture of Miyagi have two councillors in the Upper House. The Democratic Party of Japan won the seat.
The prefecture of Yamagata has one councillor in the Upper House. The Democratic Party of Japan won the seat.