Wheaton is a census-designated place in Montgomery County, Maryland, United States, situated north of Washington, D.C. and northwest of downtown Silver Spring. Wheaton takes its name from Frank Wheaton (1833–1903), a career officer in the United States Army and volunteer from Rhode Island in the Union Army who rose to the rank of major-general while serving before, during and after the Civil War.
Wheaton was found to have a population of 52,150 in the 2020 census. The United States Postal Service has assigned ZIP code 20902 to Wheaton, but the Wheaton Post Office is a part of the larger Silver Spring area. Downtown Wheaton is located around the triangle formed by Veirs Mill Road, University Boulevard, and Georgia Avenue.