Hollin Hills is a historic district and neighborhood approximately 10 miles south of Alexandria, Virginia. Though mailing addresses in Hollin Hills are listed as being in Alexandria, it is actually in an unincorporated part of southeast Fairfax County, Virginia. It is located primarily in the Fort Hunt area of the county with some portions remaining in the Hybla Valley a…Hollin Hills is a historic district and neighborhood approximately 10 miles south of Alexandria, Virginia. Though mailing addresses in Hollin Hills are listed as being in Alexandria, it is actually in an unincorporated part of southeast Fairfax County, Virginia. It is located primarily in the Fort Hunt area of the county with some portions remaining in the Hybla Valley and Groveton areas since a shift for census purposes prior to 2010. The community contains more than 30 acres of parkland across seven distinct parks, a pool and swim club, a bocce court, and a pickleball and tennis club, operated and maintained by the Civic Association of Hollin Hills.