As of the 2020 United States Census, McLean has a population of approximately 50,773 residents. The community has experienced slow, steady growth, limited primarily by its largely built-out residential zoning. The population leans slightly older, with a high concentration of established professionals, executives, and families.
McLean is known for its highly educated populace; over 80% of adult residents hold a bachelor's degree or higher, and a significant portion hold advanced or professional degrees. Demographically, the community is majority White, with a substantial and growing Asian American population (roughly 15-20%). Economically, it is one of the wealthiest communities in the nation, boasting a median household income frequently exceeding $200,000. Unemployment rates are historically well below national averages.