Tomisato is a city located in Chiba Prefecture, Japan. It lies within the Greater Tokyo Area's broader sphere, in the northern part of the prefecture, near Narita. The city covers a total area of 53.91 square kilometres (20.81 sq mi).
As of 1 November 2020, Tomisato had an estimated population of 49,914 people living in 23,753 households, giving it a population density of 930 persons per square kilometre. These figures reflect a relatively compact, moderately populated municipality by the standards of the prefecture.
Tomisato is one of the smaller cities in Chiba Prefecture by area, and its population and household counts place it among the prefecture's mid-sized municipalities. Its proximity to Narita is one of its defining geographic characteristics.