Georgetown is a community located within the municipality of Three Rivers in Kings County, Prince Edward Island, Canada. It is the Capital of Kings County. Previously incorporated as a town, it amalgamated with the town of Montague, the rural municipalities of Brudenell, Cardigan, Lorne Valley, Lower Montague, and Valleyfield, and portions of three adjacent unin…Georgetown is a community located within the municipality of Three Rivers in Kings County, Prince Edward Island, Canada. It is the Capital of Kings County. Previously incorporated as a town, it amalgamated with the town of Montague, the rural municipalities of Brudenell, Cardigan, Lorne Valley, Lower Montague, and Valleyfield, and portions of three adjacent unincorporated areas in 2018.