Penrith is a suburb and major centre in the metropolitan area of Sydney, New South Wales, Australia. It is located in Greater Western Sydney 50 kilometres (31 mi) west of the Sydney central business district on the banks of the Nepean River. Its elevation is 25 m. Penrith is the administrative seat of the local government area of the City of Penrith. The surrounding suburbs of Penrith are Castlereagh, Cranebrook, Cambridge Gardens, Emu Plains, Cambridge Park, Jamisontown, South Penrith, Jordan Springs, Glenmore Park and Kingswood. The postcode of the city is 2750.
Penrith was named after the town of Penrith in Cumbria, England. The name is of Cumbric origin, a Celtic language of northern Britain related to Welsh. ‘Pen’ is Cumbric and Welsh for ‘Head’ or ‘Chief’ and the Cumbric ‘Rid’ (Rhydd in Welsh) means ‘Ford’ giving the name ‘Chief Ford’ or ‘Hill Ford’. How it got the name is unclear. One theory is that in the early days, development in Penrith was entirely on one road, like the English Penrith, and someone familiar with both spotted the similarity and suggested the name. The earliest known written reference to the name Penrith dates back to 1819.