Kogarah Bay lies approximately 14 km south‑west of the Sydney central business district, situated along the waters of Georges River within the Bayside Council area.
The suburb recorded a population of 2,102 at the 2021 census, up slightly from 2,022 in 2016, indicating modest growth.
The median age is around 50–59 years, making it one of the older age brackets in the area.
Approximately 64.3 per cent of residents were born in Australia, with Greece, China, Egypt and Italy among the more common overseas birthplaces.
English is spoken at home by about 51.3 per cent of people, while Greek, Arabic and Cantonese are also commonly used.
Religious affiliations include Eastern Orthodox (26.3 per cent), Catholic (24.7 per cent), No Religion (18.1 per cent) and Anglican (6.9 per cent).
Land zoning highlights that environmental living zones cover approximately 65 per cent of the suburb, with nearly 22 per cent classified as recreational waterways and around 9 per cent as low-density residential.
Housing is primarily separate houses, with high ownership levels: 85 per cent of homes are owner‑occupied, often by couples with children. Median monthly mortgage repayments typically exceed $4,000 for households.
Employment patterns show that 28.7 per cent of workers are professionals, with clerical and managerial roles also prominent.
Median household income sits around $2,528 per week, while personal weekly income averages $837.
Transport usage is cash-light: only about 1.8 per cent of workers used public transport, while 40.7 per cent worked from home and 38.7 per cent commuted by car (as driver or passenger).
Recreational assets include direct access to waterfront settings, parks, and proximity to sailing facilities in neighbouring suburbs.
The suburb spans roughly 0.9 sq km and contains eight parks, which account for around 10 per cent of its area.