Check If YOUR Address Is in Zone B
The only way to know your exact zone is to check your specific address against FEMA's official maps -- free and instant below.
Data as of Nov 1, 2026 (FEMA NFHL, FEMA Community Status Book, FEMA OpenFEMA NFIP claims)
Flood Zone B: What It Means
Is Zone B safe, and do you need flood insurance? Zone B is a legacy label associated with shaded Zone X on newer maps. FEMA's map places this point outside the high-risk area (Zone B). The map triggers no federal insurance requirement here; your lender may still require it. Risk is reduced, not removed.
- FEMA: Moderate and Minimal Flood Hazard Areas -- checked 2026-11-08
- FEMA FloodSmart: What Is My Flood Risk? -- checked 2026-11-08
What is Flood Zone B?
Zone B is an older FEMA flood map designation for moderate-risk areas. On newer maps, these areas are generally shown as shaded Zone X, between the 1-percent and 0.2-percent annual-chance flood boundaries.
Risk Level: Moderate risk
Zone B indicates mapped flood risk below the high-risk area, but it does not mean flooding is impossible. FEMA describes the comparable shaded Zone X area as moderate risk. Check the current map for a specific property because map designations can differ by location and map version.
Zone B and shaded Zone X
FEMA describes Zone B on older maps as comparable to shaded Zone X on newer maps. Shaded Zone X covers the area between the limits of the base flood and the 0.2-percent annual-chance flood. The current map for your location is the best guide to the designation in use today.
Check the current map
This page is informational and is not a FEMA Form 086-0-32 Standard Flood Hazard Determination. Use the address lookup above to check the mapped zone for a specific location.
Flood Insurance in Zone B
Flood insurance is not federally required in Zone B -- it sits outside the Special Flood Hazard Area, so federally backed lenders are not required to mandate a policy.
That said, flooding can still occur in Zone B. Standard homeowner's insurance does not cover flood damage. Voluntary flood insurance may be available in NFIP-participating communities.
Schematic: Zone B Cross-Section
This diagram shows how Zone B relates to flood elevation and the landscape.
Compare: Zone B vs. Related Zones
- C Lower risk Zone C is an older flood map designation for minimal-risk areas now generally shown as unshaded Zone X.
- X Lower risk A low-risk flood zone outside the Special Flood Hazard Area. The map triggers no federal insurance requirement here, but lenders may still require coverage.
- X500 Moderate risk X500 is a legacy search label this site uses for shaded Zone X. Check the current map legend for the designation used at a specific property.
Frequently Asked Questions about Zone B
- What is Flood Zone B?
- Zone B is an older FEMA flood map designation for moderate-risk areas. On newer maps, these areas are generally shown as shaded Zone X, between the 1-percent and 0.2-percent annual-chance flood boundaries.
- Is Flood Zone B bad?
- Zone B indicates mapped flood risk below the high-risk area, but it does not mean flooding is impossible. FEMA describes the comparable shaded Zone X area as moderate risk. Check the current map for a specific property because map designations can differ by location and map version.
- Do I need flood insurance in Zone B?
- Zone B is outside the Special Flood Hazard Area, so federally backed lenders do not require flood insurance. However, flooding can still occur in Zone B, and standard homeowner's insurance does not cover flood damage. Voluntary flood insurance may be available in NFIP-participating communities.