Middletown is a small but very rapidly growing town of almost 19,000 near, as you might guess, the middle of northern Delaware. The population doubled from 2000 to 2010, many of them affluent families moving from nearby cities. While the downtown is old and in places run down, you can tell this was once a prosperous town. Some of it is being restored. But meanwhile there is tremendous growth just outside of town with huge malls and housing developments.