Give an introduction of Fairfax county in Virginia.
Fairfax county locates in northern Virginia, it is bounded on the north and southeast by the Potomac River.  The county has a populate of 1,164,025 in 2022, with a growth of 13,716 from 2020.  It is also the most populous jurisdiction in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area

Fairfax has a thriving economy, attractive to business and is headquarters to several Fortune 500 companies.  Fairfax has excellent schools, it's public school system is top-ranked in the nation, and is home to George Mason University.  

Fairfax County is also home to many historic sites and cultural attractions; like Mount Vernon, Wolf Trap national park.