Narellan is located 60 kilometres south-west of the Sydney central business district, in the local government area of Camden Council and is part of the Macarthur region.

After the land was cleared, it was used for farming for most of the next 200 years until Sydney's suburban sprawl reached the town of Camden and modern suburbs like Narellan were subdivided into housing blocks.

[2] The name of the suburb originates from William Hovell who pronounced it as "Narelling" after receiving a land grant from Governor Macquarie in 1816.

Like its neighbouring suburbs, Narellan is predominantly Australian born (82.3%) families with young children (41.9%) living in detached houses (90.6%).

Narellan lies in the central ward of Camden Council, currently represented by Fred Anderson, Rob Elliott and Debby Dewbery.