Whether you need flood insurance comes down to two things: your FEMA flood zone and how you financed your home. Standard homeowners insurance does not cover flooding, so this is a separate decision.
The short answer
If your property sits in a high-risk Special Flood Hazard Area (SFHA) — any FEMA flood zone whose code starts with A or V — and you have a mortgage from a federally regulated or insured lender, flood insurance is mandatory. Outside those zones it is optional but strongly recommended, because flooding still happens and premiums there are far cheaper.
Is insurance required in your zone?
| Flood zone group | Risk | Insurance with a federal mortgage |
|---|---|---|
| A, AE, AH, AO, AR, A99 | High (1% annual / 100-year) | Mandatory |
| V, VE | High coastal + wave action | Mandatory |
| X (shaded) | Moderate (0.2% / 500-year) | Optional, recommended |
| X (unshaded) | Minimal | Optional |
| D | Undetermined | Optional (lender may require) |
See every zone defined on our FEMA flood zones page.
How to check your flood zone
Look up your address on FEMA’s Flood Map Service Center. It returns your official zone from the Flood Insurance Rate Map (FIRM). If you are in an A or V zone, your lender will require coverage; if you are in X or D, the choice is yours.
Don’t assume “low risk” means “no risk”
Flooding is the most common and costly natural disaster in the US, and a meaningful share of NFIP claims come from outside high-risk zones. If you are in Zone X, a low-cost policy can still be worthwhile — just an inch of water can cause tens of thousands in damage. Check what coverage costs in your state and read about Special Flood Hazard Areas. This is general information, not insurance advice.