30. Fort Pierce, Florida

Over 36% of Fort Pierce’s 46,000 residents live in poverty. Due to ocean erosion, the city has to add back the sand to its beaches every few years. In the past, the economy was based on citrus farming, but changes to trade deals basically wiped out Fort Pierce’s main source of income.

Nature itself seems to have something against Fort Pierce, as well. Due to ocean erosion, the city has had to bring in and add sand from elsewhere to its beaches every few years just to keep the city in tact.