In October 1872, the control of four counties, Fukushima County, Tsugaru County, Hiyama County and Nishi County, all of which belonged to Oshima Province, were transferred from Date Prefecture of Matsumae Domain to the Development Commission as shown in a chronological table in and after the modern history of Aomori Prefecture.
明治5年（1872年）10月、松前藩館県であった渡島国に属する福島郡・津軽郡(渡島国)・檜山郡・爾志郡の4郡が青森県近代以降の年表から開拓使に移管。