What flood zone am I in?

Checked against FEMA and other official sources · Last reviewed October 8, 2026

How to look up your flood zone by address

FEMA's own tutorial gives these steps:

• Go to msc.fema.gov, the FEMA Flood Map Service Center (MSC).
• Type your address into the "Enter an address…" bar. The search box also takes a place name or longitude/latitude coordinates.
• Select Search. The page fills in the results for your location.
• Look at the map on the results page. A pin marks the approximate location of your address, and you can adjust it.
• Zoom in. The map shows the flood zone designation at the pin, plus the map number and effective date.

The Address Search lets you "save or print your map information." To save a copy, click the "Map Image" icon. The file downloads as a .zip that contains the map image. [1][2][3]

What the results page tells you

A Flood Insurance Rate Map (FIRM) is "an official map of a community" showing the special flood hazard areas and the insurance risk zones that apply there. The map legend shows the map panels, and the results show the map number that covers your address.

The results page includes:

• The map number and the map effective date.
• A link to download or print a FIRMette, which is "a full-scale section of a FIRM that you create yourself."
• A link to download all flood map information and data.
• All changes to the flood map since its effective date. These are Letters of Map Change, such as a Letter of Map Amendment. LOMCs issued before 1997 are not available on the MSC website.
• A locator map with National Flood Hazard Layer data, and a link to open the location in the NFHL Viewer.

FEMA warns that effective information you download or print "may change or become superseded by new maps over time." [1][2][3][4]

How to read the flood map

Flood maps commonly show flood zone designations, base flood elevations (BFEs), floodplain boundaries, and roads and landmarks. The legend explains the map panels, special flood hazard areas, other areas of flood hazard, and structures such as levees and dikes.

FEMA's tutorial describes the shading this way:

• Blue shading: high-risk zones (A, AO, AH). Special Flood Hazard Areas are the shaded zones beginning with A or V.
• Orange shading: moderate-risk areas (zone X).
• Clear or unshaded: low-risk areas (also zone X).

The base flood elevation is "the computed elevation to which floodwater is anticipated to rise during the base (1-percent-annual-chance) flood event." See what a 100-year flood means and the flood zones guide for each zone letter, including zone AE and zone X.

The zone matters for insurance rules. In communities in the National Flood Insurance Program, owners of buildings in high-risk areas with mortgages from federally regulated or insured lenders must buy flood insurance. See do I need flood insurance? [1]

The National Flood Hazard Layer and NFHL Viewer

The National Flood Hazard Layer (NFHL) "is a geospatial database that contains current effective flood hazard data." It is made from effective flood maps and the Letters of Map Change delivered to communities, and FEMA says new and revised data is "being added continuously."

To open it, click "Go to NFHL Viewer" on the MSC results page, above the locator map. In the NFHL Viewer you can use the address search or move around the map to find your area. FEMA also offers a KMZ file that overlays the data in Google Earth, and GIS users can download NFHL data for a county or state through the MSC's Search All Products option. [1][5]

Preliminary maps and map updates

FEMA updates flood maps over time. "Preliminary Flood Insurance Rate Maps are not final regulatory products," and you can't view them with the FIRMette tool. Historic, pending, and preliminary maps, where they exist, are listed in separate sections of the MSC's Search All Products results. FEMA's Flood Map Changes Viewer is at msc.fema.gov/fmcv.

When new flood elevations are proposed, property owners and renters get an appeal window. Under federal rules, you file a written appeal with your community within 90 days of the second newspaper publication of FEMA's proposed determination. FEMA says an appeal "must include technical information, such as hydraulic or hydrologic data, to support the claim." To review preliminary maps or file appeals and comments, contact your local floodplain administrator.

FloodSmart, the NFIP's official site, advises: "Since your flood zone affects your individual flood risk and your insurance rates, check annually for updates." [3][6][7][8]

If your area is unmapped or the map looks wrong

If the Address Search says your location is "unmapped," FEMA has not published a flood map for that area. The MSC suggests you call the FEMA Map Information eXchange (FMIX) to see if a flood study is underway in your area.

FMIX contacts listed on the MSC:

• Phone: 1-877-336-2627 (1-877-FEMA-MAP), Monday through Friday, 8:00 a.m. to 7:00 p.m. Eastern Time
• Email: FEMA-FMIX@fema.dhs.gov

Your local floodplain administrator can also help you find your community's flood maps.

If you believe your property was wrongly placed in a high-risk area, you can ask FEMA for a formal determination through a Letter of Map Change, and you can submit that request online. For a building or land on naturally high ground, that request is a Letter of Map Amendment. [3][8][9][10]

Your flood zone isn't the whole story

FloodSmart puts it plainly: "Every zone carries a flood risk; it's just a matter of how big the risk is." From 2014 to 2024, almost one-third of NFIP flood claims came from areas outside high-risk flood areas.

FloodSmart has a separate tool where you can "enter your zip code to discover your flood risk instantly."

Your zone also isn't the only thing that sets an NFIP premium. FEMA says flood risk is now "determined based on several property-specific factors," including proximity to a flood source, occupancy type, construction type, number of floors, foundation type, cost to rebuild, and flood insurance claims history. See flood insurance cost for more. [8][11][12]

Questions people ask