Green's Harbour is located on the south shore of Trinity Bay about 35 km (22 mi) from Heart's Content.

In 1866, the community was visited by the SS Great Eastern entering the harbour.

[1]The late 1800s was a period of community growth: the first marriage was recorded in 1874, and the first teacher appointed the year following.

The first official Methodist church was built in 1884, and the first post office opened in Green's Harbour, under postmaster Hezekiah Burt in 1890 and Postmaster William Mitcham in 1891.

In 1914 the first train passed, and in 1916 Ambrose Penney sported Green's Harbour's first automobile.

The population in 1956 was 608.The wooden Heart and Hand Loyal Orange Lodge #9 was formally recognized as a Registered Heritage Structure on 1995/04/01 and is listed on the Canadian Register of Historic Places.