Anyone can buy flood insurance from several sources, but the insurance agencies have really hiked the policy premiums over the past 20 years because of the recurring number of claims from people living in high risk zones. I remember 2001 which was a very active hurricane season and the insurance companies started doubling their flood insurance rates because of the number of claims. It's terribly unfortunate, but too many people either never reviewed their old policies over the years, or there were those who just decided to roll the dice to keep the lower premiums. It's a mixed bag.
I am in a flood zone because of the chance of Tsunamis. However according to the seismologists there is an extremely small chance of that ever happening where I am along the coast. If it got that bad, believe me we wouldn't be rebuilding because California would be in the ocean lol. Because of my mortgage company I am required to carry flood insurance. It has doubled and keeps going up. I feel that I am paying for the people that want to live in areas where it is a yearly problem and don't bother taking flood insurance. I pay over $850 a year with no personal property replacement. I am taking the least amount of coverage I can get away with. The mismanagement is very frustrating. They compensate by raising the insurance premiums throughout the country.