[3] The shopping centre opened on 31 March 1971 with Myer as lead tenant and was sold to the General Property Trust (GPT) in April 1971.

[2][3] In 2005, the centre underwent a $140 million expansion which added 16,000 square metres (170,000 sq ft) including 105 retailers and left the centre with 83,000 square metres (890,000 sq ft) of space.

[3] In November and December 2022, Westfield Penrith debuted a $33 million update including a Coles supermarket and a Holey Moley indoor golf course.

[5] Westfield Penrith has 91,409 m² of floor space.

The major retailers include Aldi, Apple Store, Archie Brothers Cirque Electriq, Best & Less, Big W, Coles, Cotton On, Cotton On Body, Cotton On Kids, Hoyts, JB Hi-Fi, JD Sports, Myer, Rebel, Supré, Typo and Woolworths.