Main Page | See live article | Alphabetical index Okaya (岡谷市; -shi) is a city located in Nagano, Japan. As of 2003, the city has an estimated population of 55,613 and the density of 653.19 persons per km². The total area is 85.14 km². The city was founded on April 1, 1936. External Links Official website in Japanese This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.