January 1, 2005-The town of Yasuzuka and the villages of Maki, Oshima and Uragawara (all from Higashikubiki District) the towns of Itakura, Kakizaki, Ogata and Yoshikawa and the villages of Kiyosato, Kubiki, Nakagou and Sanwa (all from Nakakubiki District)+the town of Nadachi from Nishikubiki District=>the city of Joetsu.
The town of Oguni from KariwaDistrict, the village of Yamakoshi from Koshi District, the town of Nakanoshima from Minamikanbara District and the towns of Koshiji and Mishima from Santo District merged into the city of Nagaoka.
Niigata is a source for crude oil, not often found on the Japanese islands.
On January 1, 2005, the town of Yasuzuka and the villages of Maki, Oshima and Uragawara from Higashikubiki District, the towns of Itakura, Kakizaki, Ogata and Yoshikawa and the villages of Kiyosato, Kubiki, Nakagou and Sanwa from Nakakubiki District and the town of Nadachi from Nishikubiki District were absorbed into the city of Joetsu.
On March 21, 2005, the city of Niitsu, Shirone and Toyosaka, the towns of Kameda, Kosudo and Yokogoshi from Nakakanbara District and the town of Nishikawa and the villages of Ajikata, Iwamuro, Katahigashi, Nakanokuchi and Tsukigata from Nishikanbara District were absorbed into the city of Niigata.
On April 1, 2005, the town of Oguni from KariwaDistrict, the village of Yamakoshi from Koshi District, the town of Nakanoshima from Minamikanbara District and the towns of Koshiji and Mishima from Santo District were absorbed into the city of Nagaoka.