from the RRWiki:Virginia State Police Channel Usage
Channel 1 - Louisa, Goochland, Powhatan, Amelia, Chesterfield, Prince George, Nottoway, Dinwiddie, Henrico (64, 95, 895 units), Richmond City, Petersburg City, Colonial Heights City, Hopewell City.
Channel 2 - King George, Westmoreland, Caroline, Northumberland, Essex, Richmond County, King William, King and Queen, Charles City County, New Kent, Lancaster, Hanover, Henrico (295 units).
Channel 3 - Fauquier, Rappahannock, Culpepper, Madison, Orange, Spotsylvania, Stafford.
Channel 4 - Loudoun, Prince William.
Channel 5 - Amherst, Appomattox, Prince Edward, Campbell, Charlotte, Lunenburg, Halifax, Mecklenburg.
Channel 6 - Augusta, Greene, Albemarle, Nelson, Buckingham, Cumberland, Fluvanna.
Channel 7 - Fairfax, Bland, Giles, Smyth, Wythe, Pulaski, Grayson, Carroll.
Channel 8 - Lee, Wise, Scott, Dickenson, Buchanan, Russell, Washington, Tazewell.
Channel 9 - James City County, Gloucester, York, Middlesex, Mathews, Accomac, Morthampton, Newport News City, Williamsburg City, Hampton City, Poquoson City.
Channel 10 - Brunswick, Greensville, Sussex, Southampton, Surry, Isle of Wight, Suffolk City, Chesapeake City, Portsmouth City, Norfolk City, Franklin City, Virginia Beach City, Greater Emporia City.
Channel 11 - Frederick, Shenandoah, Rockingham, Clarke, Warren, Page, Winchester City, Craig, Montgomery, Roanoke County, Roanoke City, Bedford, Floyd, Franklin County, Pittsylvania, Patrick, Henry.
Channel 12 - Highland, Bath, Alleghany, Rockbridge, Botetourt.
Channel 13 - No longer used.