In the big city where they currently live. The rural village I'm in now has a 7% poverty rate, while the nearest big city has a 21% poverty rate. The big city would like to redistribute its poor to suburbs and rural areas and redevelop ("gentrify") the land the poor used to occupy. Poor people don't suddenly come into existence ex nihilo: they exist and live somewhere now. They just need to move into the countryside because the urban real estate is worth too much for them to live on it.