Based on the provided source material, there is no information regarding a city named Miller in the United States. The source defines "miller" as an individual who operates a mill to grind grain into flour, noting that milling is one of the oldest human occupations.
The text further explains that milling was present in hunter-gatherer communities and played a significant role in the development of agriculture. Additionally, "Miller," "Milne," and other variants are identified as common surnames globally.