Shōwa gojūnen kokusei chōsa zenkoku to-dō-fu-ken-shi-ku-chō-sonbetsu jinkō oyobi setaisū : Kakuteisū : Sōwa 50-nen 10 gatsu 1-nichi : 1975 population census of Japan : final count of population and households, October 1, 1975
Chiiki messhu tōkei chizu, jinkō bunpuzu (Shōwa 45-nen kokusei chōsa kekka). shutoken hen = Statistical maps on grid square basis, population distribution, 1970 population census of Japan