Nagaizumi is located in east-central Shizuoka Prefecture, south of Mount Fuji, and north of Izu Peninsula.

[3] Nagaizumi is located in the far eastern portion of former Suruga Province, and was largely tenryō territory under direct control of the Tokugawa shogunate in the Edo period.

With the establishment of the modern municipalities system in the early Meiji period on April 1, 1888, the area was reorganized into the village of Nagaizumi through the merger of 10 small hamlets.

Large factories are operated by Toray Industries, Kyowa Hakko Kirin Co., Ltd., Toho Tenax, Tokushu Paper Mfg.

Agricultural products of Nagaizumi include persimmons, mountain yam, white welsh onions and melon.