Lauren, it just depends on the exact location of the home. Some of the homes are in a flood zone and others are not. It can even vary on the same street / in the same neighborhood. Below is a link to the FEMA flood map so you can see which areas / homes are in a flood zone and which ones aren't.
FEMA Flood Map Link - http://goo.gl/nvWbQ
I will be glad to look up any home you are interested in and let you know. Please let me know what I can do to serve you. My contact info is below.