Probably. Often it's a corner store around sprawling middle-class suburban areas on the outskirts of cities with few shops (zoning in the US is fucked), somewhat denser but low-income urban areas, and often it'll be the only place besides a gas station in rural towns where you can get groceries without driving miles to a larger town. Unsurprisingly, they're parasites.
Here's an interior shot from their own website, so if you can imagine that but more soulless in reality, you have a Dollar General. I actually don't consider myself that biased against DG in particular; the situation in America is kind of just that bad.