Introduction
For other uses, see Grey County (disambiguation). County in Ontario, CanadaGrey CountyCounty (upper-tier)County of Grey FlagSealLogoMotto: "Colour it your way"Coordinates: 44°20′N 80°40′W / 44.333°N 80.667°W / 44.333; -80.667Country CanadaProvince OntarioEstablished1852County seatOwen SoundSubdivisions List City of Owen SoundTown of The Blue MountainsTown of HanoverMunicipality (Town) of MeafordTownship of ChatsworthTownship of Georgian BluffsMunicipality (township) of Grey HighlandsTownship of SouthgateTownship of West Grey Government • TypeUpper Tier Municipal GovernmentArea • Land4,497.93 km2 (1,736.66 sq mi)Population (2021) • Total100,905 • Density22.4/km2 (58/sq mi)Time zoneUTC-5 (EST) • Summer (DST)UTC-4 (EDT)Area code519 / 226 / 548Websitewww.grey.ca Grey County is a county in the province of Ontario. The county is located in the Southwestern Ontario region, and is a part of the Georgian Triangle. At the time of the 2021 Canadian census the population of the county was 100,905. Owen Sound is the county seat and the largest city in Grey County.