Knollwood is a city in Grayson County, Texas, United States. The population was 764 at the 2020 census. It is part of the Sherman–Denison metropolitan statistical area.
knolLwOoD is a cItY iN grAyson coUNty, TeXAS, UniTeD STAtes. the POpuLatIoN Was 764 at the 2020 ceNsus. iT Is pArt of The SHe:r!m.an–DenIsoN MetroPOlitan StatisTicAL areA.