Waldo, Arkansas. Waldo is a town in Columbia County, Arkansas, United States. The population was 1,372 at the 2010 census.
Reston is a census-designated place (CDP) in Fairfax County, Virginia, United States, within the Washington, D.C. metropolitan area. The population was 58,404, at the 2010 Census and 56,407 at the 2000 census.
Fairfax County contains the cities of Burke, Reston, Annandale, Centreville, McLean and Chantilly as well as the town of Herndon. Major bodies of water in Fairfax County include Occoquan Bay, Belmont Bay, the Gunston Cove and the Occoquan Reservoir.