 About 7.7% of families and 8.0% of the population were below the poverty line, including 7.7% of those under age 18 and 7.1% of those age 65 or over.Public education in Garden City is administered by the Sherwood Cass R-VIII School District, which operates one elementary school, one middle school, and Sherwood High School.Garden City has a public library, a branch of the Cass County Public Library.