The park interior is darker than Estes Park town, and both are darker than a city, but no verified numeric Bortle class exists for either place in the research checked. The honest answer is qualitative, based on what each Bortle class describes and what the National Park Service says about light in the park.

Estes Park has not been awarded DarkSky International Community certification. Visit Estes Park is pursuing it, with only the first step marked completed. Here is what that status means and where the dark skies are.