Conception Bay South is a town located on the southern shore of Conception Bay on the Avalon Peninsula of the island of Newfoundland, Province of Newfoundland and Labrador, Canada. The town is commonly called C.B.S..
The town is located on the southern shore of Conception Bay on the Avalon Peninsula of the island of Newfoundland. It is approximately 20 kilometres (12 miles) southwest of the provincial capital, St. John's. As such, the town is part of the St. John's Metropolitan Area and most residents are employed in the nearby cities of St. John's or Mount Pearl.
The town lies on a zone of Cambrian-era bedrock, primarily shale or slate containing limestone concretions and manganese ores.
As of 2011 the population was 52,181 which makes the town the second largest population centre in the province behind the city of St. John's. The community corresponds largely, but not exactly, to the boundaries of the electoral district of the same name.
Conception Bay provided ample fishing grounds for some time in its history. The world's largest tuna was caught off the coast of Long Pond and is now on display in the Atlantic Fisheries Museum in Lunenburg, Nova Scotia. Lobster trapping is also a common sight.