During the 1950s and 1960s, St Mary's Bay was a popular destination for vacationers. 'The Bay' had a number of holiday camps, among them Maddieson's Golden Sands at Dunstall Lane, the School Journey Centre at Jefferstone Lane, and the Rugby Club camp on the opposite side of the A259 main road between Jefferstone Lane and Taylor's Lane. The School Journey Center closed at the end of the 1970s, and the site is now occupied by a housing estate. Also at St Mary's Bay was the Sands Holiday Motel and accompanying Bahia Bar, sited on the seafront roughly opposite the turning to Jefferstone Lane on the A259. The hotel and bar were demolished after being badly damaged in the Great Storm of 1987. St Mary's Bay was the site of a home for mentally handicapped children. Known as Pirates Spring and located on Coast Drive close to the beach, the home was run by the National Society for Mentally Handicapped Children and had the actor Brian Rix among its patrons. After the facility closed in the 1980s the building housed a hotel and country club in the 1990s. The Springs Community now provides sheltered housing accommodation for people with the special needs associated with autism spectrum disorders.
Entertainment
'The Bay' had a number of pubs and clubs, including the Bailiffs Sargeant; The Levin Club; The Nightrider and Pirate Spring's Country Club. Of these, only The Bailiffs Sergeant and The Levin Club remain open to the public today. Many were closed as a result of the diminishing tourist traffic to the area. The Nightrider Club, formerly next to the Jenner's coal yard, was demolished in the 1990s and the site, along with the coal yard itself, is now occupied by houses. Currently the only takeaway food shop is Yongs Chinese Takeaway, positioned almost next to The Bailiffs Sergeant pub.
Retailers
At one time 'The Bay' was home to a number of shops, but these are now reduced in number. The Post Office is located in Teelin Close down Jefferstone Lane, having previously been sited in a building that was part of the School Journey Centre at the top of Jefferstone Lane at the junction with the A259. There were two Newsagents, one at the top of Taylors Lane alongside the former St Mary's Bay Garage, and the other, St Mary's Bay Superstore, down Jefferstone Lane. The former has now closed and become a private house. St Mary's Bay Superstore has now become the Beachside Stores, which is a general newsagents and the biggest shop in the area, after Sainsbury's. Also down Jefferstone Lane is Foords electrical retailers. During the 1970s St Mary's Bay had a small supermarket situated at the top of Jefferstone Lane opposite the previous Post Office site. Known as the 'Mini-Market', it closed at the end of the 1970s. The building remained empty until the 1990s, when it was pulled down and a new housing development, Jesson Close, built on the site. 'The Bay' was host to both a butcher's and a baker's, but both are gone now; the site down Jefferstone Lane had houses built on it in the late 1980s in a development named Old Bakery Close. In between what was once 'Harry's Newsagents' and the post office was a restaurant called Betty's Restaurant. This closed and was reopened as a pharmacy which closed soon afterwards. In Teelin Close is a hairdressers called Joannes - this building was established approx 50 years ago - originally known as Mollys
Education
'The Bay' has a small nursery school in Jefferstone Lane next door to the church. Children older than nursery school age go to schools outside St Mary's Bay, generally Dymchurch Junior School. Some later attend the Marsh Academy in New Romney, and some travel to schools further afield.
Religion
St Mary's Bay has a small modern Anglican church of All Saints, located on Jefferstone Lane. It is part of the parish of St Mary in the Marsh, where there is a much older church.
Other facilities
'The Bay' is the home to an Army Cadet ForceDetachment, located down Jefferstone Lane just over the RH & DR railway crossing adjacent to a caravan park. St Mary's Bay has a modern village hall located opposite the site of The Bailiffs Sergeant pub on land that was originally part of the School Journey Centre holiday camp. Previously the town hall was located in one of the holiday camp's old buildings; the building remained in use for some years after the rest of the holiday camp had been demolished. Although no longer offering fuel, the St Mary's Bay Garage site maintains a facility for light automotive repair, in the shape of Colin Wood Engineering, who occupy the service area of the garage, which is located on the left side of the old St Mary's Bay Garage building. At the end of Jefferstone Lane is a large well-kept recreation ground with a pavilion for sporting events.
Famous residents
St Mary's Bay was the home of actor Larry Martyn, who lived down Jefferstone Lane in Old Bakery Close until he died in 1994. The children's author E. Nesbit, author of The Railway Children, lived with her second husband, Captain Tucker, in St Mary's Bay between the two World Wars and is buried in the churchyard at nearby St Mary in the Marsh.