Plympton Park is an inner south-western suburb of Adelaide 8 km from the CBD, in the state of South Australia and falls under the City of Marion. The post code for Plympton Park is 5038. It is adjacent to Park Holme, Plympton, South Plympton, and Morphettville. It is bordered to the east by Marion Road, to the west by Park Terrace, to the south by Taranna Avenue and to the north by the Glenelg tram line.

Marion Road is served by Adelaide Metro M44, 245 and 248 bus services. The 245 and 248 also service South Terrace, Ferry Avenue and Bray Street, while the 190 and 242 also serve Bray Street. The Glenelg tram line runs along the northern edge of the suburb, with tram stop 11 at the western end of Wattle Terrace.