Horningsea Park lies approximately 39 km south‑west of the Sydney central business district and forms part of the City of Liverpool in Greater Western Sydney.
Its population reached 3,673 at the 2021 Census, growing from 3,729 in 2016, with a median age of 32 and an average household size of 3.55 persons across 1,055 dwellings.
Cultural diversity is notable, with nearly 59 per cent born in Australia and others from Iraq, Fiji, and the Philippines. Meanwhile, 67.6 per cent of households speak only English at home; Arabic, Spanish, Hindi, and Vietnamese are also widely spoken.
The suburb has a strong family presence, with married couples accounting for 56.2 per cent of adults and approximately 36.9 per cent of adults attending educational institutions, including primary, secondary, and tertiary students.
Private vehicle travel dominates commuting, although specific transport data notes access via Cowpasture Road and Camden Valley Way, with four bus routes linking to Liverpool and nearby suburbs. Rail access is available via Edmondson Park and Leppington stations, which were opened in 2015.
Essential services centre on Carnes Hill Marketplace at the northern boundary, which hosts a full‑line supermarket and specialty shops, while the southern edge features the Trash and Treasure Bazaar on Camden Valley Way.
Residents also utilise nearby schools, such as Holy Spirit Primary School and John Edmondson High School, which are located within the suburb.
The heritage-listed Horningsea Park homestead dates back to the 1830s, when early settler Joshua John Moore built it, and it was later owned by explorer Sir Paul Edmund de Strzelecki; the building remains on the State Heritage Register.
Recreation space includes Strzlecki Park, a landscaped reserve with playgrounds and open lawn, while green corridors and suburban streets support walking, cycling and local street‑scale play areas.
The 1996 subdivision has shaped modern housing, combining detached and medium-density dwellings with community-scale urban design.
Horningsea Park combines a youthful and family‑oriented population, public transport connectivity, heritage significance, local shopping and parkland amenity, defining its character within the expanding Liverpool district.