Red Willow County is south of Frontier County where I grew up. The biggest town and county seat is the city of McCook. McCook and North Platte were both about the same distance from my hometown, Curtis. They were both considered “cities” when I was young. When we wanted to go somewhere “special”, we went to North Platte or McCook.
Here’s what Wikipedia says about Red Willow County:
Red Willow County was formed in 1873. It was named after the Red Willow Creek. The name is reported to be a mistranslation of the Dakota Indian name Chanshasha Wakpala, which literally means Red Dogwood Creek.