It is a single town name that does not have a "chome".

Thus, no residential addressing system has been implemented and the postal code is 160-0016.

The number of households and population of each chōme as of December 1, 2019 are as follows:[1] The Shinjuku City Board of Education operates public elementary and junior high schools.

Shinanomachi is zoned to Yotsuya No.

6 (Dairoku) Elementary School (四谷第六小学校) and Yotsuya Junior High School (四谷中学校).