Most of the park consists of non-native grassland and mixed oak woodland.
Native wildflowers displays are common in late winter and early spring in the serpentine soil in the northwest and southern sections of the park.
The park offers over 17 miles of unpaved trails for equestrian, hiking and bicycle use.
Picnicking by groups and families is a popular activity in Santa Teresa County Park, namely in the Pueblo Day Use area.
The main entrance to the park is a large parking lot by the Pueblo Day Use Area and is accessible via Bernal Road from the east.