Ōsato District, Saitama

Ōsato (大里郡) is a district located in Saitama Prefecture, Japan.

As of 2003, the district has an estimated population of 130,305 and a population density of 629.34 persons per km2. The total area is 207.05 km2.

Towns

 * Yorii

Mergers

 * On October 1, 2005, the towns of Ōsato and Menuma merged into the city of Kumagaya.
 * On January 1, 2006, the towns of Hanazono, Kawamoto and Okabe merged into the city of Fukaya.
 * On February 13, 2007, the town of Kōnan merged into the city of Kumagaya.