McLean, New YorkMcLean is a hamlet in Tompkins County, New York, United States. The community is located in the towns of Dryden and Groton, west-southwest of Cortland. McLean has a post office with ZIP code 13102, which opened on June 30, 1826.EducationDryden Village is in the Dryden Central School District. The zoned comprehensive high school is Dryden High School.