Katsuta, city (1990 pop. 109,825), Ibaraki prefecture, central Honshu, Japan, on the Naka River. Katsuta is a commercial center with mechanical, automotive, and electronics industries.

Tsuchiura, city (1990 pop. 127,471), Ibaraki prefecture, central Honshu, Japan. A suburb of the Tokyo-Yokohama Metropolitan Area, it is a commercial and cultural center.

Hitachi, city (1990 pop. 202,141), Ibaraki prefecture, E central Honshu, Japan, on the Kashima Sea. The city is a leading producer of Japan's electrical equipment. It is also the site of one o...

Mito, city (1990 pop. 234,968), capital of Ibaraki prefecture, central Honshu, Japan, on the Naka River. It is chiefly a communications center. It produces electrical machinery, iron and steel...

Tsukuba, city (1990 pop. 143,396) Ibaraki prefecture, central Honshu, E central Japan, 31 mi (50 km) S of Mito. The city's products include peanuts, mushrooms, tea, processed foods, sake, and ...