The Thamnophis postremus is classified as Least Concern. Does not qualify for a more at risk category. Widespread and abundant taxa are included in this category.
Thamnophis ordinoides, Thamnophis postremus, Thamnophis proximus (T. p. proximus, T. p. alpinus, T. p. diabolicus, T. p. orarius, T. p. rubrilineatus, T. p. rutiloris, Bestimmungsschl More