Blog · October 14, 2026 · Mississippi
Greene County Flood Zone Map in Mississippi
Look up any Greene County address on FEMA's flood map, read the zone, and match it to the parcel record for land around State Line.
Main page: Greene County, MS GIS & Parcel Viewer (official map link, Greene County facts and neighboring maps).
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Is that lot in State Line in a flood zone? The Greene County flood zone map answer comes from FEMA, and it is free to look up. For any tract in Greene County, Mississippi, the answer affects insurance, permits and resale.
Below are the FEMA links, a plain reading of the zone labels, notes on where water shapes land around State Line, and short answers to common questions.
How to use the Greene County flood zone map
The authoritative source for a Greene County flood zone map is FEMA, so begin at the FEMA Flood Map Service Center. Download the FIRM panel FEMA lists as effective for that part of Greene County. On acreage outside State Line, try FEMA's National Flood Hazard Layer viewer; zoom to the tract near McLain and click. Switch to the Greene County ArcGIS parcel map and find the same tract near McLain. Match the Greene County lines and acreage to the FEMA view, since flood maps don't draw property lines in detail.
Step one: the free Greene County viewer
The county's own public map is the Greene County ArcGIS parcel map, built on an Esri ArcGIS web map, and it opens without an account for parcels in State Line and the rest of the county. Most people find their Greene County tract fastest by searching an address in Leakesville, then clicking the outline. Our Greene County, MS page keeps the official link and the maps next door to Leakesville in one place.
High, moderate and minimal risk in Greene County
For a lot in State Line, the label matters more than the color: A and V zones are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any given year (the base or 100-year flood). Zone AE near McLain means FEMA published a base flood elevation; plain Zone A means no detailed elevation was studied. Shaded Zone X around State Line falls between the base flood and the 500-year flood. Unshaded Zone X near McLain is minimal risk.
Unmapped creeks in Greene County
Small streams and ditches near State Line may not be studied in detail can still flood; FEMA says moderate- and low-risk areas still carry risk.
Getting oriented in Greene County, MS
Leakesville is the county seat, and McLain and State Line are among the other towns on the county map. Smaller places such as Leaf, Avera, and Neely appear on the county map as little clusters of lots. Greene County had an estimated 13,601 people in 2023 (Census Bureau), spread across about 713 square miles. Outside State Line, most of the county map is farm, ranch or timber ground with large, irregular tracts.
Neighboring maps around Greene County
A farm near the county line can carry separate records in Mobile County, AL, Washington County, AL, and George County as well. Our Mississippi page links each map neighboring Greene County.
Flood insurance and building rules in Greene County
Insurance is the practical stake for a Greene County buyer. When a structure near McLain is mapped in a high-risk zone and is financed by a regulated or federally insured lender, a flood policy becomes a loan condition; that applies where the local government around McLain is in the National Flood Insurance Program. For a Greene County home in shaded or unshaded X, coverage is optional, although some lenders require it anyway. When a county homesite is on a rise inside a mapped zone, the owner can ask FEMA for a Letter of Map Amendment (LOMA); a surveyor near McLain can supply the elevation data. New construction in a Greene County Special Flood Hazard Area often requires a permit and an elevation check, and the building office serving McLain explains the steps.
Where Greene County land records are kept
For a tract near State Line, the recorded documents sit with the chancery clerk; the parcel map is built from them for taxes. Mississippi puts land records with the chancery clerk, so that office in Greene County is where to request deeds and plats. Copy the parcel ID and legal description from the county record before you request a deed for land near Leakesville.
Quick answers for Greene County
Is there a floodplain layer in the Greene County ArcGIS parcel map?
Check the layer list in the Greene County ArcGIS parcel map; if Greene County includes a floodplain layer, confirm the zone on FEMA's map anyway.
What does 100-year flood mean for Greene County land?
No, ground around McLain mapped that way faces a 1-percent annual chance, and two floods in one decade near McLain are possible.
How do I challenge a flood zone for a lot in McLain?
An owner near State Line can request a Letter of Map Amendment from FEMA with elevation data, typically from a licensed surveyor.
Do I need a permit to build in the floodplain near McLain?
Building in a Special Flood Hazard Area near McLain typically needs a floodplain permit and may require elevating the structure, so check with the county floodplain administrator.
Is flood insurance required for a Zone X lot in McLain?
Not under federal rules; Zone X in Greene County is outside the Special Flood Hazard Area, though a lender can still require coverage.
Open the official Greene County, MS parcel map Greene County 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.