was a

town A town is a type of a human settlement, generally larger than a village but smaller than a city. The criteria for distinguishing a town vary globally, often depending on factors such as population size, economic character, administrative stat ...

located in Atetsu District,

Okayama Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Okayama Prefecture has a population of 1,826,059 (1 February 2025) and has a geographic area of 7,114 Square kilometre, km2 (2,746 sq mi). Okayama Prefecture ...

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. As of 2003, the town had an estimated

population Population is a set of humans or other organisms in a given region or area. Governments conduct a census to quantify the resident population size within a given jurisdiction. The term is also applied to non-human animals, microorganisms, and pl ...

of 3,922 and a

density Density (volumetric mass density or specific mass) is the ratio of a substance's mass to its volume. The symbol most often used for density is ''ρ'' (the lower case Greek letter rho), although the Latin letter ''D'' (or ''d'') can also be u ...

of 32.35 persons per km². The total area was 121.25 km². On March 31, 2005, Ōsa, along with the towns of Shingō, Tessei and Tetta (all from Atetsu District), was merged into the expanded city of

Niimi is a city located in northwestern Okayama Prefecture, Japan. , the city had an estimated population of 27,106 in 12,626 households. and a population density of 34 persons per km2. The total area of the city is Geography Niimi is located on a k ...

References

Dissolved municipalities of Okayama Prefecture Niimi, Okayama {{Okayama-geo-stub