Shinjuku

Shinjuku
新宿区
Shinjuku City
Clockwise from top:
Location of Shinjuku in Tokyo
Shinjuku
 
Coordinates: 35°42′5″N 139°42′35″E / 35.70139°N 139.70972°E / 35.70139; 139.70972
CountryJapan
RegionKantō
PrefectureTokyo
Government
 • MayorKenichi Yoshizumi
 • Tourism AmbassadorGodzilla
Area
 • Total
18.23 km2 (7.04 sq mi)
Population
 (1 October, 2020)
 • Total
349,385
 • Density19,170/km2 (49,640/sq mi)
Time zoneUTC+9 (Japan Standard Time)
- TreeZelkova serrata
- FlowerAzalea
Phone number03-3209-1111
City Hall AddressKabukichō 1-4-1, Shinjuku-ku, Tokyo 160-8484
Websitewww.city.shinjuku.lg.jp

Shinjuku (Japanese: 新宿区, Hepburn: Shinjuku-ku; IPA: [ɕiɲdʑɯkɯ] ), officially called Shinjuku City, is one of the 23 special wards of Tokyo.

Since the end of World War II, Shinjuku has become a major secondary center of Tokyo (fukutoshin), rivaling the original city center in Marunouchi. Today, it is a major commercial and administrative center, housing the busiest railway station in the world (Shinjuku Station) as well as the Tokyo Metropolitan Government Building, the administrative center of the Tokyo Metropolitan Government.

As of 2025, the ward has an estimated population of 355,981, living in a total area of 18.23 km2.