Am I in a flood zone?
It depends on your address. All US land is assigned a FEMA flood zone, but high-risk designation -- the kind that typically requires flood insurance -- only affects properties in Special Flood Hazard Areas (SFHAs) like Zone AE or VE. To find out if YOU are in a flood zone, enter your address in the tool below for a free, instant answer from FEMA's official maps.
But a general answer can't tell you YOUR risk -- the only way to know is to check your address.
Answered using FEMA National Flood Hazard Layer + US Census geocoding data.
What is a Special Flood Hazard Area (SFHA)?
FEMA's high-risk zones are collectively called Special Flood Hazard Areas (what FEMA calls an SFHA). This is a land area with a 1% or greater annual chance of flooding -- often described as the '100-year floodplain.' Zone AE is the most common SFHA designation. Zone VE is the coastal version. Zone A is used where FEMA has done an approximate (not detailed) study. Being in an SFHA typically triggers mandatory flood insurance for federally backed mortgage holders.
What if I am not in a high-risk zone?
If your address falls in Zone X (the most common low-risk designation), flood insurance is not required. However, about 25% of NFIP flood insurance claims come from outside high-risk zones. Heavy rainfall, failed drainage systems, and ice jams can cause flooding anywhere. Flood insurance in Zone X is often significantly cheaper than in Zone AE, and many homeowners find it worth carrying.
How often do FEMA flood maps change?
FEMA continuously updates its maps through a process called a Flood Map Modernization or Map Revision. Your zone can change as a result. If your zone recently changed from low-risk to high-risk, you may be eligible for a 'newly mapped' preferred risk policy during a transition period. If it changed the other direction (high to low), you can apply for a Letter of Map Amendment to confirm the lower risk designation and potentially lower your insurance costs.
Related Flood Zones
- Zone AE: The most common high-risk flood zone. Flood insurance is typically required for federally-backed mortgages.
- Zone X: A low-risk flood zone outside the Special Flood Hazard Area. Flood insurance is not required but is often available at lower rates.
- Zone VE: The highest-risk coastal flood zone. Wave action adds to storm-surge risk. Flood insurance is required for federally-backed mortgages.