What is the population of the town where McPherson Opera House is? 
McPherson Opera House: McPherson Opera House is an historic opera building at 221 South Main Street in McPherson, Kansas. McPherson, Kansas: McPherson ( ) is a city in and the county seat of McPherson County, Kansas, United States, in the central part of the state. McPherson, Kansas:  As of the 2010 census, the city population was 13,155.
13,155