Menai lies approximately 28 kilometres south of the Sydney central business district and forms part of the Sutherland Shire local government area.
It is situated in a suburban area that borders the Georges River to the north, Illawong and Bangor to the east, Barden Ridge to the south, and Holsworthy to the west.
The latest census records a population of 10,419 residents. The community features predominantly Australian-born residents at 78.6%, accompanied by small proportions of people born in England, China, South Africa, New Zealand, and North Macedonia.
English is the primary language at home for more than 80 per cent of households, while Greek, Arabic, Mandarin, Macedonian and Cantonese appear in smaller numbers. The most common religious affiliations include Catholic, No Religion, Anglican and Eastern Orthodox.
Menai features homes built mainly since the early 1980s, mostly four-bedroom dwellings with dual bathrooms and double garages, and it maintains high rates of homeownership, exceeding 81 per cent.
Public transport relies on buses that connect to Sutherland Station for rail access into Sydney, and the average public‑transport commute to the CBD takes around 60 minutes.
Driving to the city typically takes about 50 minutes.
Residents can access essential services at Menai Marketplace and Menai Central, which offer supermarkets such as Woolworths, Aldi, and IGA, department-store options, pharmacies, banks, cafés, fast food outlets, and community amenities.
Menai hosts several educational institutions, including Menai Primary School, Aquinas College (Catholic Years 7–12) and Holy Family Primary School, while Menai High School lies just outside the suburb boundary.
Recreational opportunities revolve around the local Menai Hawks FC football club and undulating bushland that invites walking and nature appreciation.
Menai experiences occasional bushfire risk due to its proximity to surrounding native vegetation.