is a neighborhood in Chiyoda, Tokyo

Chiyoda, Tokyo

is one of the 23 special wards in central Tokyo, Japan. In English, it is called Chiyoda ward. As of October 2007, the ward has an estimated population of 45,543 and a population density of 3,912 people per km², making it by far the least populated of the special wards...

, at the south-east corner of the ward bordering with Chūō

Chuo, Tokyo

is one of the 23 special wards that form the heart of Tokyo, Japan. The ward refers to itself as Chūō City in English.Its Japanese name literally means "Central Ward," and it is historically the main commercial center of Tokyo, although Shinjuku has risen to challenge it since the end of World War II...

 and Minato

Minato, Tokyo

is one of the 23 special wards of Tokyo, Japan. As of 1 March 2008, it had an official population of 217,335 and a population density of 10,865 persons per km². The total area is 20.34 km².Minato hosts 49 embassies...

. Its postal code

Postal codes in Japan

Postal codes in Japan are 7 digit numeric. Format is NNN-NNNN, where N is a number.See also: Japanese addressing system...

 is 100-0011.

Uchisaiwaichō Station on the Toei Mita Line

Toei Mita Line

The is a subway line of the Tokyo Metropolitan Bureau of Transportation network in Tokyo, Japan. The line runs between Nishi-Takashimadaira in Itabashi and Meguro in Shinagawa. Trains continue with direct service into the Meguro Line of Tokyu Corporation for...

 is located in the area.

Businesses in Uchisaiwaichō

• Kroll Inc.
  Kroll Inc.
  Kroll is a risk consultancy firm based in Midtown Manhattan, New York City. and established in 1972.- History:Kroll was founded in 1972 by Jules B. Kroll as a consultant to corporate purchasing departments...
  
   (NBF Hibiya Building)
• NTT Communications
• JFE Steel
• Shinsei Bank
  Shinsei Bank
  is a Japanese commercial bank headquartered in Chiyoda, Tokyo.-History:Shinsei Bank is the successor of a trust bank, the Long-Term Credit Bank of Japan, which had a government monopoly on the issuance of many long-term debt securities...
  
  
• Ernst & Young ShinNihon LLC
• The Tokyo Electric Power Company
  The Tokyo Electric Power Company
  , also known as or TEPCO, is an electric utility servicing Japan's Kantō region, Yamanashi Prefecture, and the eastern portion of Shizuoka Prefecture. This area includes Tokyo...
  
  
• Fukoku Mutual Life Insurance
• Mizuho Bank
  Mizuho Bank
  is the core retail banking unit of Mizuho Financial Group, which is the second-largest financial services company in Japan and one of the three so-called Japanese "megabanks"...
  
   (Mizuho Bank Head Office Building
  Mizuho Bank Head Office Building
  is a 143 m tall skyscraper in Tokyo, Japan. At 38 stories the building is the 86th tallest building in Tokyo. It contains 1.4 million sq ft of office space, 100% of which is now occupied by Mizuho Bank, the consumer banking arm of the second-largest Japanese financial conglomerate Mizuho...
  
  )
• Imperial Hotel

China Airlines

China Airlines

China Airlines is both the flag carrier and the largest airline of Republic of China . Although not directly state-owned, the airline is owned by China Airlines Group, which is owned by the China Aviation Development Foundation...

 operates the Tokyo office in Uchisaiwaichō.

When Yamato Life existed, its headquarters was in Uchisaiwaichō.

Etymology

In the late Edo period

Edo period

The , or , is a division of Japanese history which was ruled by the shoguns of the Tokugawa family, running from 1603 to 1868. The political entity of this period was the Tokugawa shogunate....

, the present-day Uchiwaisaichō area was a part of the Hibiya area with many daimyo

Daimyo

is a generic term referring to the powerful territorial lords in pre-modern Japan who ruled most of the country from their vast, hereditary land holdings...

's mansions and was located within the outer moat of the Edo Castle

Edo Castle

, also known as , is a flatland castle that was built in 1457 by Ōta Dōkan. It is located in Chiyoda in Tokyo, then known as Edo, Toshima District, Musashi Province. Tokugawa Ieyasu established the Tokugawa shogunate here. It was the residence of the shogun and location of the shogunate, and also...

. Uchisaiwaichō, literally meaning "Inner Saiwai District," is considered to be named after its location between on the Outer Moat and .

After the Meiji Restoration

Meiji Restoration

The , also known as the Meiji Ishin, Revolution, Reform or Renewal, was a chain of events that restored imperial rule to Japan in 1868...

, the term "Uchisaiwaichō" was introduced as a neighborhood in Tokyo.