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Takekoma Shrine, Kanahebisui ShrineAbukuma River, Iwanuma Station Iwanuma urban area, Dontosai festival
Takekoma Shrine, Kanahebisui Shrine
Abukuma River, Iwanuma Station
Iwanuma urban area, Dontosai festival
Flag of Iwanuma
Official seal of Iwanuma
Location of Iwanuma in Miyagi Prefecture
Location of Iwanuma in Miyagi Prefecture
Iwanuma is located in Japan
Coordinates: 38°06′15.4″N 140°52′12.6″E / 38.104278°N 140.870167°E / 38.104278; 140.870167Coordinates: 38°06′15.4″N 140°52′12.6″E / 38.104278°N 140.870167°E / 38.104278; 140.870167
Country Japan
Region Tōhoku
Prefecture Miyagi
 • -Mayor Tsuneaki Iguchi
 • Total 60.45 km2 (23.34 sq mi)
Population (September 2015)
 • Total 44,149
 • Density 730/km2 (1,900/sq mi)
Time zone Japan Standard Time (UTC+9)
- Tree Japanese Black Pine
- Flower Azalea
- Bird Seagull
Phone number 0223-22-1111
Address 1-6-20 Sakura, Iwanuma-shi, Miyagi-ken 989-2480
Website Official website
Iwanuma City Hall

Iwanuma (岩沼市 Iwanuma-shi?) is a city located in Miyagi Prefecture, in the Tohoku region of northern Japan. As of September 2015, the city had an estimated population of 44,149 and a population density of 730 persons per km². The total area was 60.71 square kilometres (23.44 sq mi). Iwanuma is at the convergence of two ancient roads, the Tōkaidō (via the Pacific coast) and the Tōsandō (inland route), both originating in the Kansai region.


Iwanuma is in the east-center Miyagi Prefecture, bordered by the Pacific Ocean to the east. It is also located at the mouth of the Abukuma River.

Neighboring municipalities[edit]


The area of present-day Iwanuma was part of ancient Mutsu Province, and the mention of “Iwanuma Castle” appears in early Muromachi period. The area came under the control of the Date clan of Sendai Domain during the Edo period, under the Tokugawa shogunate. The town of Iwanuma was established on June 1, 1889 with the establishment of the municipalities system.

The village of Okuma merged with Iwanuma on January 11, 1947, followed by Sengan and Tamaura on April 1, 1955. Iwanuma was raised to city status on November 1, 1971.

The city was seriously affected by the tsunami associated with the 2011 Tōhoku earthquake,[1] which resulted in 180 deaths.


Iwanuma has four elementary schools, four middle schools and one high school.





  • Iwanuma Community FM Station

Local attractions[edit]

Sister city relations[edit]

Noted people from Iwanuma[edit]


External links[edit]

Media related to Iwanuma at Wikimedia Commons