Communications in the Isle of Man were taken over by the GPO. The internal telegraph system was extended within a year to Castletown and Peel, however by then the previous lack of modern communications in Castletown had already started the Isle of Man Government on its move to Douglas. Due to increasing usage in the years following nationalisation, further cables between Port Cornaa and St Bees were laid in 1875 and 1885. By 1883 Smith's Directory listed several telegraph offices operated by the Post Office, in addition to those at Douglas, Ramsey, Castletown and Peel the telegraph was also available at Laxey, Ballaugh, and Port St.
Port St Mary St Mary's is the Port St Mary site of the Living Hope Community Church (formerly known as Port St Mary Baptist Church). The current church building was built in the early 2000s on the site of the former Port St Mary Wesleyan Methodist Chapel, which was completed in 1895, closed in 1970 and was demolished in 2000. In the lower part of the village, near the port, lies the current Port St Mary Methodist Chapel, built in 1903 as a Primitive Methodist chapel and known as Mount Tabor. Another smaller former Wesleyan chapel, on the High Street, opened in 1835