What was the population in the city where Sherman Day Thatcher founded a school, in 2010?
Sherman Day Thacher: Sherman Day Thacher, (November 6, 1861 - August 5, 1931), was the founder and headmaster of The Thacher School at Ojai, California. Ojai, California:  The population was 7,461 at the 2010 census, down from 7,862 at the 2000 census.
7,461