Trigg was named after Henry Trigg, former Superintendent of Public Works for the Swan River Colony. In 1919 there were only 3 buildings in the locality, and holiday and fishing shacks begin to appear in the 1920s.
Like the small island off the coast of this area, the suburb of Trigg was named after Henry Trigg, who was appointed Superintendent of Public Works for the Swan River Colony in 1842.
Land at Trigg remained largely vacant until the first grants were taken up in 1877. In 1888 a group of Sydney developers devised a scheme to divide a large area of Trigg into one-eighth-of-an-acre (505 m²) lots, however the scheme failed. By 1919 there were only 3 buildings in the locality, and holiday and fishing shacks did not begin to appear until the 1920s.
Trigg eventually started to be formally developed in the late 1940s, when 1,888 lots were subdivided and sold. Many of the streets in the area were named after former residents and pioneers, as well as local personalities.
Residential development in Trigg is largely dominated by single detached dwellings on individual lots. The style and form of housing in the area varies considerably, ranging from older style holiday shacks and workers' dwellings to large modern housing developments. There are a small number of duplex developments in Trigg, while many of the homes along the coast have been built in elegant Mediterranean styles.
Retail facilities are provided at the Lynn Street Shopping Centre, located on the north eastern boundary of the suburb. There is also some retail development within the Trigg Island Lifesaving Club on the ocean foreshore as well as the Trigg Island Café.
Trigg has a large proportion of public open space, the most significant area being the Trigg Bushland Reserve, which runs through the centre of the suburb. The reserve contains a significant pocket of remnant coastal vegetation and provides a readily identifiable landscape feature. There are also several smaller parks, and the beaches provide a well-utilised recreation area.
Trigg Beach is particularly well known for its good surfing conditions and is one of the most popular beaches in Western Australia. It is used for many sports, including surfing and passive recreational pursuits such as swimming and sunbathing. Trigg Island is a focal point for Trigg Beach and a popular fishing spot.