[4][5] The station consists of a single track with a side platform.

Perris–South station is served by 14 Metrolink 91/Perris Valley Line trains (7 in each direction) each weekday, running primarily at peak hours in the peak direction of travel.

Weekend service consists of 4 trains (2 in each direction) on both Saturday and Sunday, running westbound in the morning and eastbound in the evening.

[6] The station contains six bus docks which were previously served by the Riverside Transit Agency, but service was later eliminated with the agency focusing on serving the Perris–Downtown station instead.

In April, 2023, $15.5 million in funding was allocated by the state following a joint application between Metrolink and the Riverside County Transportation Committee (RCTC) for a double-track project along Metrolink’s 91/Perris Valley Line between the cities of Moreno Valley and Perris, which will include this station.