Little is known about roost-site characteristics of the pallid bat (Antrozous pallidus) in the Red Hills region of Kansas and Oklahoma. The species is listed as a Species in Need of Conservation within the state of Kansas. We investigated diurnal roost characteristics of the pallid bat during two summers in the Red Hills region of Kansas and Oklahoma. Mist nets were used to capture bats within three 314-ha study sites. Radio transmitters were attached to 10 pallid bats and bats were tracked daily. Physical characteristics of 11 pallid bat roosts were recorded. Two of the 10 pallid bats radioed were females, one of which was tracked to a suspected maternity roost. The largest roost observed was a bachelor colony of 10 individuals. Most roosts (n = 8) were in vertical crevices, but pallid bats also used vertical or horizontal crevices or exfoliated cliff faces. Pallid bats roosted on cliff faces with a westerly aspect (mean = 285° ± 51.3° s). Lengths of roosting crevices ranged from 0.3 m to 3.2 m and approximate widths ranged from 3 cm to 20 cm. Roost heights above talus piles ranged from 0 m to 13 m. Most roost sites (n = 8) had no surrounding tree canopy cover. Distances from netting locations to roosts ranged from 120 m to 1200 m. Knowledge of roost sites used by pallid bats in the Red Hills could aid in management to protect habitat for this species as developments (e.g., wind turbines and electrical transmission lines), woody encroachment by eastern red cedar (Juniperus virginiana) and related control measures, and other activities intersect this species' habitat.