Blog · October 14, 2026 · Mississippi
Biloxi Flood Zone Map: checking a property's flood zone
Flood zones are set by FEMA, and checking one near Gulfport takes a few minutes.
Main page: Harrison County, MS GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before an offer near Pass Christian, pull up the Biloxi flood zone map: FEMA's zone label affects insurance, building rules and resale. This Biloxi guide covers: finding the address on FEMA's map, reading the zone codes, and confirming the outline on the county map.
Checking the Biloxi flood zone map step by step
Flood zones come from FEMA's Flood Map Service Center: type an address near Gulfport, and pick the FIRMette or map view. Rural land near Pass Christian with no street number is still easy to locate: pan from the closest town and click inside the land.
The free map to start with
Your first stop is the Harrison County parcel viewer; it includes each tax parcel from Gulfport to D'Iberville. On ground around Gulfport, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. Out toward D'Iberville, the parcel card usually lists the owner of record, assessed acreage, a parcel ID and sometimes recent sales.
Reading the legal description
Mississippi is laid out under the Public Land Survey System, so rural legal descriptions near Pass Christian cite section, township and range. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though corrections make some sections near D'Iberville odd-sized. Keep the legal description for land near Gulfport for any title or survey request.
A short flood checklist
Ask the listing agent for any Elevation Certificate on the property near Long Beach; getting a quote early avoids surprises.
City limits and county records
Biloxi lies within Harrison County, Mississippi, which means parcel data comes from the county. Biloxi is also the county seat, so deeds and plats are filed in town. If you're looking near Pass Christian, the municipality handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Land beyond the city limits toward Gulfport generally answers to county rules rather than the town's.
What the zone letters mean
For acreage around D'Iberville, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. For a parcel near Pass Christian, minimal risk is not no risk: FEMA notes that many claims come from moderate- and low-risk areas.
Low spots and local drainage
Small streams around Gulfport aren't always studied in detail, so ask neighbors about past flooding. Wetlands near Gulfport can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
The paper trail behind a parcel
Before you sign anything, pull the recorded deed from the Chancery Clerk; the parcel line is a drawing of it. Older tracts near Gulfport may go back through many deeds, so a title company can sort it out if money is changing hands.
Use the county map alongside FEMA
FEMA's map shows zones but not ownership, so check the Harrison County parcel viewer too for the outline of the tract near Gulfport.
Lenders and permits
For a structure inside an A or V zone and a federally regulated lender is involved, flood insurance is generally required in communities in the NFIP, whether the land is near Long Beach or elsewhere in the county. Building or adding on near Long Beach in a mapped zone can trigger elevation rules; ask the local floodplain administrator before you plan.
A quick look at the area
Biloxi holds the county offices, which is where the courthouse records live. Other places on the map include D'Iberville, Gulfport, Long Beach, and Pass Christian. About 210,612 people live in Harrison County (Census estimate, 2023) spread over about 574 square miles. Harrison County dates to 1841, and some chains of title near Long Beach are long. Places such as Tchoutacabouffa River, Biloxi Bay, and De Soto National Forest make handy reference points on the map near Gulfport.
A word on accuracy
Listed acreage is an estimate; just a licensed surveyor sets the real lines on land around Long Beach. For land near D'Iberville, records update in batches, so a deed recorded last month might lag behind.
Questions about the Biloxi flood zone map
Does the county parcel map show flood zones around Long Beach?
A flood layer may appear in the Harrison County parcel viewer layer list, but FEMA's own map is the official source.
What is a base flood elevation for land near Pass Christian?
For most people, a BFE near Pass Christian tells builders how high the lowest floor should be; local rules may require building above it.
Do I need to worry about flooding in Zone X around Pass Christian?
Zone X near Pass Christian means moderate (shaded) or minimal (unshaded) mapped risk; FEMA notes that a large share of claims come from these areas.
Where can I see the Biloxi flood zone map for free?
Generally, FEMA's free map shows the zone for any spot near Long Beach, which takes a couple of minutes.
What's the tax parcel number used for near Pass Christian?
Every office uses it to pull the same file for land near D'Iberville, and it's on the record panel and tax bills.
Open the official Harrison County, MS parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.