Big D

Big D is your one-stop shop for hot food, fuel, and fast service. Conveniently located at the corner of Yellow Stone Hwy and Hwy 257 in Mills, our convenience store offers high-quality gasoline, diesel, high-flow diesel for work trucks, and a clean, well-lit environment that makes every stop easy. This location is oversized truck friendly with easy access for larger pickups, work trucks, trailers, RVs, fleet vehicles, and diesel customers. Inside, you’ll find hot, fresh pizza, crispy chicken tenders, fountain drinks, coffee, and quick snacks on the go. Whether you’re searching for a bite to eat, a reliable gas station, diesel near you, or truck-friendly fuel access in Mills, WY, Big D has you covered.