The provided source material does not contain information regarding a city named Butler in the United States. Instead, it defines a butler as a domestic worker who serves in a large household.
A butler is typically the senior male servant and holds the highest status among household staff. In large houses divided into departments, the butler is often responsible for the dining room, wine cellar, and pantry, and may also oversee the entire parlor floor. While housekeepers generally manage female servants and the overall appearance of the home, butlers are traditionally in charge of male servants.